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Finding the Fourth Proportional to 137,411.40, 206,126.70 and 54,294.60

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Solution

The fourth proportional to 137,411.40, 206,126.70 and 54,294.60 is: 81,445.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,411.40 : 206,126.70 = 54,294.60 : x
  2. Step 2: Convert to fraction form
    137,411.40/206,126.70 = 54,294.60/x
  3. Step 3: Cross multiply
    137,411.40x = 206,126.70 × 54,294.60
  4. Step 4: Simplify right side
    137,411.40x = 11,191,566,725.82
  5. Step 5: Solve for x
    x = 11,191,566,725.82/137,411.40
  6. Step 6: Final answer
    x = 81,445.69

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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.