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Finding the Fourth Proportional to 147,372.80, 221,053.80 and 42,191.60

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Solution

The fourth proportional to 147,372.80, 221,053.80 and 42,191.60 is: 63,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,372.80 : 221,053.80 = 42,191.60 : x
  2. Step 2: Convert to fraction form
    147,372.80/221,053.80 = 42,191.60/x
  3. Step 3: Cross multiply
    147,372.80x = 221,053.80 × 42,191.60
  4. Step 4: Simplify right side
    147,372.80x = 9,326,613,508.08
  5. Step 5: Solve for x
    x = 9,326,613,508.08/147,372.80
  6. Step 6: Final answer
    x = 63,285.85

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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.