Home / 124,624.98-172,080.45-100,348.88

Finding the Fourth Proportional to 124,624.98, 172,080.45 and 100,348.88

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Solution

The fourth proportional to 124,624.98, 172,080.45 and 100,348.88 is: 138,560.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,624.98 : 172,080.45 = 100,348.88 : x
  2. Step 2: Convert to fraction form
    124,624.98/172,080.45 = 100,348.88/x
  3. Step 3: Cross multiply
    124,624.98x = 172,080.45 × 100,348.88
  4. Step 4: Simplify right side
    124,624.98x = 17,268,079,566.99
  5. Step 5: Solve for x
    x = 17,268,079,566.99/124,624.98
  6. Step 6: Final answer
    x = 138,560.34

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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.