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Finding the Fourth Proportional to 91,092, 136,708.56 and 63,207.84

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Solution

The fourth proportional to 91,092, 136,708.56 and 63,207.84 is: 94,860.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,092 : 136,708.56 = 63,207.84 : x
  2. Step 2: Convert to fraction form
    91,092/136,708.56 = 63,207.84/x
  3. Step 3: Cross multiply
    91,092x = 136,708.56 × 63,207.84
  4. Step 4: Simplify right side
    91,092x = 8,641,052,787.11
  5. Step 5: Solve for x
    x = 8,641,052,787.11/91,092
  6. Step 6: Final answer
    x = 94,860.72

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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.