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Finding the Fourth Proportional to 148,978.40, 223,139.55 and 132,357.20

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Solution

The fourth proportional to 148,978.40, 223,139.55 and 132,357.20 is: 198,244.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,978.40 : 223,139.55 = 132,357.20 : x
  2. Step 2: Convert to fraction form
    148,978.40/223,139.55 = 132,357.20/x
  3. Step 3: Cross multiply
    148,978.40x = 223,139.55 × 132,357.20
  4. Step 4: Simplify right side
    148,978.40x = 29,534,126,047.26
  5. Step 5: Solve for x
    x = 29,534,126,047.26/148,978.40
  6. Step 6: Final answer
    x = 198,244.35

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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.