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Finding the Fourth Proportional to 137,275.53, 205,831.90 and 42,477.64

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Solution

The fourth proportional to 137,275.53, 205,831.90 and 42,477.64 is: 63,691.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,275.53 : 205,831.90 = 42,477.64 : x
  2. Step 2: Convert to fraction form
    137,275.53/205,831.90 = 42,477.64/x
  3. Step 3: Cross multiply
    137,275.53x = 205,831.90 × 42,477.64
  4. Step 4: Simplify right side
    137,275.53x = 8,743,253,348.72
  5. Step 5: Solve for x
    x = 8,743,253,348.72/137,275.53
  6. Step 6: Final answer
    x = 63,691.27

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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.