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Finding the Fourth Proportional to 148,871.20, 223,306.80 and 98,132.80

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Solution

The fourth proportional to 148,871.20, 223,306.80 and 98,132.80 is: 147,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,871.20 : 223,306.80 = 98,132.80 : x
  2. Step 2: Convert to fraction form
    148,871.20/223,306.80 = 98,132.80/x
  3. Step 3: Cross multiply
    148,871.20x = 223,306.80 × 98,132.80
  4. Step 4: Simplify right side
    148,871.20x = 21,913,721,543.04
  5. Step 5: Solve for x
    x = 21,913,721,543.04/148,871.20
  6. Step 6: Final answer
    x = 147,199.20

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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.