Home / 138,429.23-207,545.43-66,299.54

Finding the Fourth Proportional to 138,429.23, 207,545.43 and 66,299.54

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Solution

The fourth proportional to 138,429.23, 207,545.43 and 66,299.54 is: 99,402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,429.23 : 207,545.43 = 66,299.54 : x
  2. Step 2: Convert to fraction form
    138,429.23/207,545.43 = 66,299.54/x
  3. Step 3: Cross multiply
    138,429.23x = 207,545.43 × 66,299.54
  4. Step 4: Simplify right side
    138,429.23x = 13,760,166,538.10
  5. Step 5: Solve for x
    x = 13,760,166,538.10/138,429.23
  6. Step 6: Final answer
    x = 99,402.17

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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.