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Finding the Fourth Proportional to 98,269.80, 147,404.70 and 45,781.80

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Solution

The fourth proportional to 98,269.80, 147,404.70 and 45,781.80 is: 68,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,269.80 : 147,404.70 = 45,781.80 : x
  2. Step 2: Convert to fraction form
    98,269.80/147,404.70 = 45,781.80/x
  3. Step 3: Cross multiply
    98,269.80x = 147,404.70 × 45,781.80
  4. Step 4: Simplify right side
    98,269.80x = 6,748,452,494.46
  5. Step 5: Solve for x
    x = 6,748,452,494.46/98,269.80
  6. Step 6: Final answer
    x = 68,672.70

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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.