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Finding the Fourth Proportional to 91,238.52, 136,901.12 and 63,201.72

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Solution

The fourth proportional to 91,238.52, 136,901.12 and 63,201.72 is: 94,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,238.52 : 136,901.12 = 63,201.72 : x
  2. Step 2: Convert to fraction form
    91,238.52/136,901.12 = 63,201.72/x
  3. Step 3: Cross multiply
    91,238.52x = 136,901.12 × 63,201.72
  4. Step 4: Simplify right side
    91,238.52x = 8,652,386,253.93
  5. Step 5: Solve for x
    x = 8,652,386,253.93/91,238.52
  6. Step 6: Final answer
    x = 94,832.60

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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.