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Finding the Fourth Proportional to 100,767.60, 151,151.40 and 89,881.20

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Solution

The fourth proportional to 100,767.60, 151,151.40 and 89,881.20 is: 134,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,767.60 : 151,151.40 = 89,881.20 : x
  2. Step 2: Convert to fraction form
    100,767.60/151,151.40 = 89,881.20/x
  3. Step 3: Cross multiply
    100,767.60x = 151,151.40 × 89,881.20
  4. Step 4: Simplify right side
    100,767.60x = 13,585,669,213.68
  5. Step 5: Solve for x
    x = 13,585,669,213.68/100,767.60
  6. Step 6: Final answer
    x = 134,821.80

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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.