Home / 121,558.10-167,758.56-67,853.61

Finding the Fourth Proportional to 121,558.10, 167,758.56 and 67,853.61

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Solution

The fourth proportional to 121,558.10, 167,758.56 and 67,853.61 is: 93,642.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,558.10 : 167,758.56 = 67,853.61 : x
  2. Step 2: Convert to fraction form
    121,558.10/167,758.56 = 67,853.61/x
  3. Step 3: Cross multiply
    121,558.10x = 167,758.56 × 67,853.61
  4. Step 4: Simplify right side
    121,558.10x = 11,383,023,904.40
  5. Step 5: Solve for x
    x = 11,383,023,904.40/121,558.10
  6. Step 6: Final answer
    x = 93,642.66

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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.