Home / 138,162.56-207,243.78-62,172.28

Finding the Fourth Proportional to 138,162.56, 207,243.78 and 62,172.28

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Solution

The fourth proportional to 138,162.56, 207,243.78 and 62,172.28 is: 93,258.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,162.56 : 207,243.78 = 62,172.28 : x
  2. Step 2: Convert to fraction form
    138,162.56/207,243.78 = 62,172.28/x
  3. Step 3: Cross multiply
    138,162.56x = 207,243.78 × 62,172.28
  4. Step 4: Simplify right side
    138,162.56x = 12,884,817,800.31
  5. Step 5: Solve for x
    x = 12,884,817,800.31/138,162.56
  6. Step 6: Final answer
    x = 93,258.39

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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.