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Finding the Fourth Proportional to 135,492.91, 186,679.13 and 89,470.83

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Solution

The fourth proportional to 135,492.91, 186,679.13 and 89,470.83 is: 123,270.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,492.91 : 186,679.13 = 89,470.83 : x
  2. Step 2: Convert to fraction form
    135,492.91/186,679.13 = 89,470.83/x
  3. Step 3: Cross multiply
    135,492.91x = 186,679.13 × 89,470.83
  4. Step 4: Simplify right side
    135,492.91x = 16,702,336,704.78
  5. Step 5: Solve for x
    x = 16,702,336,704.78/135,492.91
  6. Step 6: Final answer
    x = 123,270.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.