Home / 122,629.86-169,229.88-71,645.58

Finding the Fourth Proportional to 122,629.86, 169,229.88 and 71,645.58

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Solution

The fourth proportional to 122,629.86, 169,229.88 and 71,645.58 is: 98,871.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,629.86 : 169,229.88 = 71,645.58 : x
  2. Step 2: Convert to fraction form
    122,629.86/169,229.88 = 71,645.58/x
  3. Step 3: Cross multiply
    122,629.86x = 169,229.88 × 71,645.58
  4. Step 4: Simplify right side
    122,629.86x = 12,124,572,905.93
  5. Step 5: Solve for x
    x = 12,124,572,905.93/122,629.86
  6. Step 6: Final answer
    x = 98,871.29

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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.