Home / 91,175.04-125,760.12-79,217.88

Finding the Fourth Proportional to 91,175.04, 125,760.12 and 79,217.88

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Solution

The fourth proportional to 91,175.04, 125,760.12 and 79,217.88 is: 109,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,175.04 : 125,760.12 = 79,217.88 : x
  2. Step 2: Convert to fraction form
    91,175.04/125,760.12 = 79,217.88/x
  3. Step 3: Cross multiply
    91,175.04x = 125,760.12 × 79,217.88
  4. Step 4: Simplify right side
    91,175.04x = 9,962,450,094.95
  5. Step 5: Solve for x
    x = 9,962,450,094.95/91,175.04
  6. Step 6: Final answer
    x = 109,267.30

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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.