Home / 155,239,820,999.80-232,859,731,499.70-128,740,259,552.20

Finding the Fourth Proportional to 155,239,820,999.80, 232,859,731,499.70 and 128,740,259,552.20

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Solution

The fourth proportional to 155,239,820,999.80, 232,859,731,499.70 and 128,740,259,552.20 is: 193,110,389,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,239,820,999.80 : 232,859,731,499.70 = 128,740,259,552.20 : x
  2. Step 2: Convert to fraction form
    155,239,820,999.80/232,859,731,499.70 = 128,740,259,552.20/x
  3. Step 3: Cross multiply
    155,239,820,999.80x = 232,859,731,499.70 × 128,740,259,552.20
  4. Step 4: Simplify right side
    155,239,820,999.80x = 29,978,422,272,526,980,743,168
  5. Step 5: Solve for x
    x = 29,978,422,272,526,980,743,168/155,239,820,999.80
  6. Step 6: Final answer
    x = 193,110,389,328.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.