Home / 122,613.89-169,188.35-68,888.61

Finding the Fourth Proportional to 122,613.89, 169,188.35 and 68,888.61

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Solution

The fourth proportional to 122,613.89, 169,188.35 and 68,888.61 is: 95,055.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,613.89 : 169,188.35 = 68,888.61 : x
  2. Step 2: Convert to fraction form
    122,613.89/169,188.35 = 68,888.61/x
  3. Step 3: Cross multiply
    122,613.89x = 169,188.35 × 68,888.61
  4. Step 4: Simplify right side
    122,613.89x = 11,655,149,915.25
  5. Step 5: Solve for x
    x = 11,655,149,915.25/122,613.89
  6. Step 6: Final answer
    x = 95,055.71

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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.