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Finding the Fourth Proportional to 98,614.80, 148,019.40 and 48,751.20

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Solution

The fourth proportional to 98,614.80, 148,019.40 and 48,751.20 is: 73,174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,614.80 : 148,019.40 = 48,751.20 : x
  2. Step 2: Convert to fraction form
    98,614.80/148,019.40 = 48,751.20/x
  3. Step 3: Cross multiply
    98,614.80x = 148,019.40 × 48,751.20
  4. Step 4: Simplify right side
    98,614.80x = 7,216,123,373.28
  5. Step 5: Solve for x
    x = 7,216,123,373.28/98,614.80
  6. Step 6: Final answer
    x = 73,174.85

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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.