Home / 120,720.74-181,258.86-67,516.96

Finding the Fourth Proportional to 120,720.74, 181,258.86 and 67,516.96

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Solution

The fourth proportional to 120,720.74, 181,258.86 and 67,516.96 is: 101,374.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,720.74 : 181,258.86 = 67,516.96 : x
  2. Step 2: Convert to fraction form
    120,720.74/181,258.86 = 67,516.96/x
  3. Step 3: Cross multiply
    120,720.74x = 181,258.86 × 67,516.96
  4. Step 4: Simplify right side
    120,720.74x = 12,238,046,293.97
  5. Step 5: Solve for x
    x = 12,238,046,293.97/120,720.74
  6. Step 6: Final answer
    x = 101,374.84

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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.