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Finding the Fourth Proportional to 115,434.60, 173,151.90 and 40,639.20

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Solution

The fourth proportional to 115,434.60, 173,151.90 and 40,639.20 is: 60,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,434.60 : 173,151.90 = 40,639.20 : x
  2. Step 2: Convert to fraction form
    115,434.60/173,151.90 = 40,639.20/x
  3. Step 3: Cross multiply
    115,434.60x = 173,151.90 × 40,639.20
  4. Step 4: Simplify right side
    115,434.60x = 7,036,754,694.48
  5. Step 5: Solve for x
    x = 7,036,754,694.48/115,434.60
  6. Step 6: Final answer
    x = 60,958.80

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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.