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Finding the Fourth Proportional to 89,908.40, 134,862.60 and 72,995.60

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Solution

The fourth proportional to 89,908.40, 134,862.60 and 72,995.60 is: 109,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,908.40 : 134,862.60 = 72,995.60 : x
  2. Step 2: Convert to fraction form
    89,908.40/134,862.60 = 72,995.60/x
  3. Step 3: Cross multiply
    89,908.40x = 134,862.60 × 72,995.60
  4. Step 4: Simplify right side
    89,908.40x = 9,844,376,404.56
  5. Step 5: Solve for x
    x = 9,844,376,404.56/89,908.40
  6. Step 6: Final answer
    x = 109,493.40

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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.