Home / 122,618.73-169,208.40-71,636.19

Finding the Fourth Proportional to 122,618.73, 169,208.40 and 71,636.19

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Solution

The fourth proportional to 122,618.73, 169,208.40 and 71,636.19 is: 98,854.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,618.73 : 169,208.40 = 71,636.19 : x
  2. Step 2: Convert to fraction form
    122,618.73/169,208.40 = 71,636.19/x
  3. Step 3: Cross multiply
    122,618.73x = 169,208.40 × 71,636.19
  4. Step 4: Simplify right side
    122,618.73x = 12,121,445,092.00
  5. Step 5: Solve for x
    x = 12,121,445,092.00/122,618.73
  6. Step 6: Final answer
    x = 98,854.76

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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.