Home / 121,285.76-181,961.48-68,732.15

Finding the Fourth Proportional to 121,285.76, 181,961.48 and 68,732.15

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Solution

The fourth proportional to 121,285.76, 181,961.48 and 68,732.15 is: 103,116.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,285.76 : 181,961.48 = 68,732.15 : x
  2. Step 2: Convert to fraction form
    121,285.76/181,961.48 = 68,732.15/x
  3. Step 3: Cross multiply
    121,285.76x = 181,961.48 × 68,732.15
  4. Step 4: Simplify right side
    121,285.76x = 12,506,603,393.92
  5. Step 5: Solve for x
    x = 12,506,603,393.92/121,285.76
  6. Step 6: Final answer
    x = 103,116.83

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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.