Home / 122,221.89-168,689.93-79,706.61

Finding the Fourth Proportional to 122,221.89, 168,689.93 and 79,706.61

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Solution

The fourth proportional to 122,221.89, 168,689.93 and 79,706.61 is: 110,010.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,221.89 : 168,689.93 = 79,706.61 : x
  2. Step 2: Convert to fraction form
    122,221.89/168,689.93 = 79,706.61/x
  3. Step 3: Cross multiply
    122,221.89x = 168,689.93 × 79,706.61
  4. Step 4: Simplify right side
    122,221.89x = 13,445,702,062.90
  5. Step 5: Solve for x
    x = 13,445,702,062.90/122,221.89
  6. Step 6: Final answer
    x = 110,010.59

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1.5x scale

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.