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Finding the Fourth Proportional to 91,471.70, 137,207.56 and 60,080.16

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Solution

The fourth proportional to 91,471.70, 137,207.56 and 60,080.16 is: 90,120.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,471.70 : 137,207.56 = 60,080.16 : x
  2. Step 2: Convert to fraction form
    91,471.70/137,207.56 = 60,080.16/x
  3. Step 3: Cross multiply
    91,471.70x = 137,207.56 × 60,080.16
  4. Step 4: Simplify right side
    91,471.70x = 8,243,452,158.01
  5. Step 5: Solve for x
    x = 8,243,452,158.01/91,471.70
  6. Step 6: Final answer
    x = 90,120.25

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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.