Home / 124,718.54-172,105.05-71,003.36

Finding the Fourth Proportional to 124,718.54, 172,105.05 and 71,003.36

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Solution

The fourth proportional to 124,718.54, 172,105.05 and 71,003.36 is: 97,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,718.54 : 172,105.05 = 71,003.36 : x
  2. Step 2: Convert to fraction form
    124,718.54/172,105.05 = 71,003.36/x
  3. Step 3: Cross multiply
    124,718.54x = 172,105.05 × 71,003.36
  4. Step 4: Simplify right side
    124,718.54x = 12,220,036,822.97
  5. Step 5: Solve for x
    x = 12,220,036,822.97/124,718.54
  6. Step 6: Final answer
    x = 97,980.92

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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.