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Finding the Fourth Proportional to 123,811.79, 185,535.64 and 73,158.75

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Solution

The fourth proportional to 123,811.79, 185,535.64 and 73,158.75 is: 109,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,811.79 : 185,535.64 = 73,158.75 : x
  2. Step 2: Convert to fraction form
    123,811.79/185,535.64 = 73,158.75/x
  3. Step 3: Cross multiply
    123,811.79x = 185,535.64 × 73,158.75
  4. Step 4: Simplify right side
    123,811.79x = 13,573,555,319.95
  5. Step 5: Solve for x
    x = 13,573,555,319.95/123,811.79
  6. Step 6: Final answer
    x = 109,630.55

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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.