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Finding the Fourth Proportional to 100,340.25, 150,583.68 and 80,854.08

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Solution

The fourth proportional to 100,340.25, 150,583.68 and 80,854.08 is: 121,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,340.25 : 150,583.68 = 80,854.08 : x
  2. Step 2: Convert to fraction form
    100,340.25/150,583.68 = 80,854.08/x
  3. Step 3: Cross multiply
    100,340.25x = 150,583.68 × 80,854.08
  4. Step 4: Simplify right side
    100,340.25x = 12,175,304,909.41
  5. Step 5: Solve for x
    x = 12,175,304,909.41/100,340.25
  6. Step 6: Final answer
    x = 121,340.19

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1.5x scale

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.