Home / 86,933,999.20-130,400,998.80-77,864,072.80

Finding the Fourth Proportional to 86,933,999.20, 130,400,998.80 and 77,864,072.80

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Solution

The fourth proportional to 86,933,999.20, 130,400,998.80 and 77,864,072.80 is: 116,796,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,933,999.20 : 130,400,998.80 = 77,864,072.80 : x
  2. Step 2: Convert to fraction form
    86,933,999.20/130,400,998.80 = 77,864,072.80/x
  3. Step 3: Cross multiply
    86,933,999.20x = 130,400,998.80 × 77,864,072.80
  4. Step 4: Simplify right side
    86,933,999.20x = 10,153,552,863,755,912
  5. Step 5: Solve for x
    x = 10,153,552,863,755,912/86,933,999.20
  6. Step 6: Final answer
    x = 116,796,109.20

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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.