Home / 138,128.15-207,171.72-38,277.93

Finding the Fourth Proportional to 138,128.15, 207,171.72 and 38,277.93

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Solution

The fourth proportional to 138,128.15, 207,171.72 and 38,277.93 is: 57,411.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,128.15 : 207,171.72 = 38,277.93 : x
  2. Step 2: Convert to fraction form
    138,128.15/207,171.72 = 38,277.93/x
  3. Step 3: Cross multiply
    138,128.15x = 207,171.72 × 38,277.93
  4. Step 4: Simplify right side
    138,128.15x = 7,930,105,373.03
  5. Step 5: Solve for x
    x = 7,930,105,373.03/138,128.15
  6. Step 6: Final answer
    x = 57,411.22

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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.