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Finding the Fourth Proportional to 115,451.98, 159,350.30 and 67,720.71

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Solution

The fourth proportional to 115,451.98, 159,350.30 and 67,720.71 is: 93,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,451.98 : 159,350.30 = 67,720.71 : x
  2. Step 2: Convert to fraction form
    115,451.98/159,350.30 = 67,720.71/x
  3. Step 3: Cross multiply
    115,451.98x = 159,350.30 × 67,720.71
  4. Step 4: Simplify right side
    115,451.98x = 10,791,315,454.71
  5. Step 5: Solve for x
    x = 10,791,315,454.71/115,451.98
  6. Step 6: Final answer
    x = 93,470.16

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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.