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Finding the Fourth Proportional to 145,481.43, 218,023.08 and 109,913.52

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Solution

The fourth proportional to 145,481.43, 218,023.08 and 109,913.52 is: 164,719.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,481.43 : 218,023.08 = 109,913.52 : x
  2. Step 2: Convert to fraction form
    145,481.43/218,023.08 = 109,913.52/x
  3. Step 3: Cross multiply
    145,481.43x = 218,023.08 × 109,913.52
  4. Step 4: Simplify right side
    145,481.43x = 23,963,684,164.04
  5. Step 5: Solve for x
    x = 23,963,684,164.04/145,481.43
  6. Step 6: Final answer
    x = 164,719.88

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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.