Home / 128,736,040.80-193,104,061.20-120,169,999.20

Finding the Fourth Proportional to 128,736,040.80, 193,104,061.20 and 120,169,999.20

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Solution

The fourth proportional to 128,736,040.80, 193,104,061.20 and 120,169,999.20 is: 180,254,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736,040.80 : 193,104,061.20 = 120,169,999.20 : x
  2. Step 2: Convert to fraction form
    128,736,040.80/193,104,061.20 = 120,169,999.20/x
  3. Step 3: Cross multiply
    128,736,040.80x = 193,104,061.20 × 120,169,999.20
  4. Step 4: Simplify right side
    128,736,040.80x = 23,205,314,879,920,752
  5. Step 5: Solve for x
    x = 23,205,314,879,920,752/128,736,040.80
  6. Step 6: Final answer
    x = 180,254,998.80

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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.