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Finding the Fourth Proportional to 98,314.40, 147,451.80 and 28,174.88

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Solution

The fourth proportional to 98,314.40, 147,451.80 and 28,174.88 is: 42,256.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,314.40 : 147,451.80 = 28,174.88 : x
  2. Step 2: Convert to fraction form
    98,314.40/147,451.80 = 28,174.88/x
  3. Step 3: Cross multiply
    98,314.40x = 147,451.80 × 28,174.88
  4. Step 4: Simplify right side
    98,314.40x = 4,154,436,770.78
  5. Step 5: Solve for x
    x = 4,154,436,770.78/98,314.40
  6. Step 6: Final answer
    x = 42,256.65

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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.