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Finding the Fourth Proportional to 92,290.90, 138,436.35 and 91,707.70

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Solution

The fourth proportional to 92,290.90, 138,436.35 and 91,707.70 is: 137,561.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,290.90 : 138,436.35 = 91,707.70 : x
  2. Step 2: Convert to fraction form
    92,290.90/138,436.35 = 91,707.70/x
  3. Step 3: Cross multiply
    92,290.90x = 138,436.35 × 91,707.70
  4. Step 4: Simplify right side
    92,290.90x = 12,695,679,254.90
  5. Step 5: Solve for x
    x = 12,695,679,254.90/92,290.90
  6. Step 6: Final answer
    x = 137,561.55

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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.