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Finding the Fourth Proportional to 148,909.80, 223,073.10 and 89,569.20

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Solution

The fourth proportional to 148,909.80, 223,073.10 and 89,569.20 is: 134,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,909.80 : 223,073.10 = 89,569.20 : x
  2. Step 2: Convert to fraction form
    148,909.80/223,073.10 = 89,569.20/x
  3. Step 3: Cross multiply
    148,909.80x = 223,073.10 × 89,569.20
  4. Step 4: Simplify right side
    148,909.80x = 19,980,479,108.52
  5. Step 5: Solve for x
    x = 19,980,479,108.52/148,909.80
  6. Step 6: Final answer
    x = 134,178.40

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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.