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Finding the Fourth Proportional to 115,236.81, 159,022.71 and 67,489.20

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Solution

The fourth proportional to 115,236.81, 159,022.71 and 67,489.20 is: 93,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,236.81 : 159,022.71 = 67,489.20 : x
  2. Step 2: Convert to fraction form
    115,236.81/159,022.71 = 67,489.20/x
  3. Step 3: Cross multiply
    115,236.81x = 159,022.71 × 67,489.20
  4. Step 4: Simplify right side
    115,236.81x = 10,732,315,479.73
  5. Step 5: Solve for x
    x = 10,732,315,479.73/115,236.81
  6. Step 6: Final answer
    x = 93,132.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.