Home / 80,901.06-121,340.25-34,143

Finding the Fourth Proportional to 80,901.06, 121,340.25 and 34,143

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Solution

The fourth proportional to 80,901.06, 121,340.25 and 34,143 is: 51,209.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,901.06 : 121,340.25 = 34,143 : x
  2. Step 2: Convert to fraction form
    80,901.06/121,340.25 = 34,143/x
  3. Step 3: Cross multiply
    80,901.06x = 121,340.25 × 34,143
  4. Step 4: Simplify right side
    80,901.06x = 4,142,920,155.75
  5. Step 5: Solve for x
    x = 4,142,920,155.75/80,901.06
  6. Step 6: Final answer
    x = 51,209.71

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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.