Home / 138,251,272.40-207,376,908.60-86,966,997.20

Finding the Fourth Proportional to 138,251,272.40, 207,376,908.60 and 86,966,997.20

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Solution

The fourth proportional to 138,251,272.40, 207,376,908.60 and 86,966,997.20 is: 130,450,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,251,272.40 : 207,376,908.60 = 86,966,997.20 : x
  2. Step 2: Convert to fraction form
    138,251,272.40/207,376,908.60 = 86,966,997.20/x
  3. Step 3: Cross multiply
    138,251,272.40x = 207,376,908.60 × 86,966,997.20
  4. Step 4: Simplify right side
    138,251,272.40x = 18,034,947,029,560,856
  5. Step 5: Solve for x
    x = 18,034,947,029,560,856/138,251,272.40
  6. Step 6: Final answer
    x = 130,450,495.80

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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.