Home / 124,915.76-172,379.40-71,218.06

Finding the Fourth Proportional to 124,915.76, 172,379.40 and 71,218.06

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Solution

The fourth proportional to 124,915.76, 172,379.40 and 71,218.06 is: 98,278.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,915.76 : 172,379.40 = 71,218.06 : x
  2. Step 2: Convert to fraction form
    124,915.76/172,379.40 = 71,218.06/x
  3. Step 3: Cross multiply
    124,915.76x = 172,379.40 × 71,218.06
  4. Step 4: Simplify right side
    124,915.76x = 12,276,526,451.96
  5. Step 5: Solve for x
    x = 12,276,526,451.96/124,915.76
  6. Step 6: Final answer
    x = 98,278.44

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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.