Home / 121,280.20-181,920.30-91,755.70

Finding the Fourth Proportional to 121,280.20, 181,920.30 and 91,755.70

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Solution

The fourth proportional to 121,280.20, 181,920.30 and 91,755.70 is: 137,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,280.20 : 181,920.30 = 91,755.70 : x
  2. Step 2: Convert to fraction form
    121,280.20/181,920.30 = 91,755.70/x
  3. Step 3: Cross multiply
    121,280.20x = 181,920.30 × 91,755.70
  4. Step 4: Simplify right side
    121,280.20x = 16,692,224,470.71
  5. Step 5: Solve for x
    x = 16,692,224,470.71/121,280.20
  6. Step 6: Final answer
    x = 137,633.55

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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.