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Finding the Fourth Proportional to 100,366.60, 150,549.90 and 98,811.40

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Solution

The fourth proportional to 100,366.60, 150,549.90 and 98,811.40 is: 148,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,366.60 : 150,549.90 = 98,811.40 : x
  2. Step 2: Convert to fraction form
    100,366.60/150,549.90 = 98,811.40/x
  3. Step 3: Cross multiply
    100,366.60x = 150,549.90 × 98,811.40
  4. Step 4: Simplify right side
    100,366.60x = 14,876,046,388.86
  5. Step 5: Solve for x
    x = 14,876,046,388.86/100,366.60
  6. Step 6: Final answer
    x = 148,217.10

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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.