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Finding the Fourth Proportional to 109,446.70, 151,029.95 and 63,502.79

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Solution

The fourth proportional to 109,446.70, 151,029.95 and 63,502.79 is: 87,630.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,446.70 : 151,029.95 = 63,502.79 : x
  2. Step 2: Convert to fraction form
    109,446.70/151,029.95 = 63,502.79/x
  3. Step 3: Cross multiply
    109,446.70x = 151,029.95 × 63,502.79
  4. Step 4: Simplify right side
    109,446.70x = 9,590,822,125.90
  5. Step 5: Solve for x
    x = 9,590,822,125.90/109,446.70
  6. Step 6: Final answer
    x = 87,630.07

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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.