Home / 138,102.42-207,130.56-38,272.74

Finding the Fourth Proportional to 138,102.42, 207,130.56 and 38,272.74

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Solution

The fourth proportional to 138,102.42, 207,130.56 and 38,272.74 is: 57,402.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,102.42 : 207,130.56 = 38,272.74 : x
  2. Step 2: Convert to fraction form
    138,102.42/207,130.56 = 38,272.74/x
  3. Step 3: Cross multiply
    138,102.42x = 207,130.56 × 38,272.74
  4. Step 4: Simplify right side
    138,102.42x = 7,927,454,068.93
  5. Step 5: Solve for x
    x = 7,927,454,068.93/138,102.42
  6. Step 6: Final answer
    x = 57,402.72

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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.