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Finding the Fourth Proportional to 92,404.62, 137,938.44 and 81,194.52

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Solution

The fourth proportional to 92,404.62, 137,938.44 and 81,194.52 is: 121,204.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,404.62 : 137,938.44 = 81,194.52 : x
  2. Step 2: Convert to fraction form
    92,404.62/137,938.44 = 81,194.52/x
  3. Step 3: Cross multiply
    92,404.62x = 137,938.44 × 81,194.52
  4. Step 4: Simplify right side
    92,404.62x = 11,199,845,425.35
  5. Step 5: Solve for x
    x = 11,199,845,425.35/92,404.62
  6. Step 6: Final answer
    x = 121,204.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.