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Finding the Fourth Proportional to 145,630.92, 218,275.92 and 55,614.66

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Solution

The fourth proportional to 145,630.92, 218,275.92 and 55,614.66 is: 83,356.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,630.92 : 218,275.92 = 55,614.66 : x
  2. Step 2: Convert to fraction form
    145,630.92/218,275.92 = 55,614.66/x
  3. Step 3: Cross multiply
    145,630.92x = 218,275.92 × 55,614.66
  4. Step 4: Simplify right side
    145,630.92x = 12,139,341,076.99
  5. Step 5: Solve for x
    x = 12,139,341,076.99/145,630.92
  6. Step 6: Final answer
    x = 83,356.89

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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.