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Finding the Fourth Proportional to 97,310.30, 145,965.45 and 80,689.10

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Solution

The fourth proportional to 97,310.30, 145,965.45 and 80,689.10 is: 121,033.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,310.30 : 145,965.45 = 80,689.10 : x
  2. Step 2: Convert to fraction form
    97,310.30/145,965.45 = 80,689.10/x
  3. Step 3: Cross multiply
    97,310.30x = 145,965.45 × 80,689.10
  4. Step 4: Simplify right side
    97,310.30x = 11,777,820,791.60
  5. Step 5: Solve for x
    x = 11,777,820,791.60/97,310.30
  6. Step 6: Final answer
    x = 121,033.65

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Similar ratio
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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.