Home / 138,251,331.40-207,376,997.10-86,967,056.20

Finding the Fourth Proportional to 138,251,331.40, 207,376,997.10 and 86,967,056.20

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Solution

The fourth proportional to 138,251,331.40, 207,376,997.10 and 86,967,056.20 is: 130,450,584.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,251,331.40 : 207,376,997.10 = 86,967,056.20 : x
  2. Step 2: Convert to fraction form
    138,251,331.40/207,376,997.10 = 86,967,056.20/x
  3. Step 3: Cross multiply
    138,251,331.40x = 207,376,997.10 × 86,967,056.20
  4. Step 4: Simplify right side
    138,251,331.40x = 18,034,966,961,382,936
  5. Step 5: Solve for x
    x = 18,034,966,961,382,936/138,251,331.40
  6. Step 6: Final answer
    x = 130,450,584.30

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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.