Home / 125,083.64-172,642.20-79,751.18

Finding the Fourth Proportional to 125,083.64, 172,642.20 and 79,751.18

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Solution

The fourth proportional to 125,083.64, 172,642.20 and 79,751.18 is: 110,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,083.64 : 172,642.20 = 79,751.18 : x
  2. Step 2: Convert to fraction form
    125,083.64/172,642.20 = 79,751.18/x
  3. Step 3: Cross multiply
    125,083.64x = 172,642.20 × 79,751.18
  4. Step 4: Simplify right side
    125,083.64x = 13,768,419,167.80
  5. Step 5: Solve for x
    x = 13,768,419,167.80/125,083.64
  6. Step 6: Final answer
    x = 110,073.70

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1.5x scale

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.