Home / 138,437.29-207,510.13-71,806.69

Finding the Fourth Proportional to 138,437.29, 207,510.13 and 71,806.69

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Solution

The fourth proportional to 138,437.29, 207,510.13 and 71,806.69 is: 107,634.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,437.29 : 207,510.13 = 71,806.69 : x
  2. Step 2: Convert to fraction form
    138,437.29/207,510.13 = 71,806.69/x
  3. Step 3: Cross multiply
    138,437.29x = 207,510.13 × 71,806.69
  4. Step 4: Simplify right side
    138,437.29x = 14,900,615,576.77
  5. Step 5: Solve for x
    x = 14,900,615,576.77/138,437.29
  6. Step 6: Final answer
    x = 107,634.41

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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.