Home / 124,776.80-172,211.40-79,474.20

Finding the Fourth Proportional to 124,776.80, 172,211.40 and 79,474.20

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Solution

The fourth proportional to 124,776.80, 172,211.40 and 79,474.20 is: 109,686.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,776.80 : 172,211.40 = 79,474.20 : x
  2. Step 2: Convert to fraction form
    124,776.80/172,211.40 = 79,474.20/x
  3. Step 3: Cross multiply
    124,776.80x = 172,211.40 × 79,474.20
  4. Step 4: Simplify right side
    124,776.80x = 13,686,363,245.88
  5. Step 5: Solve for x
    x = 13,686,363,245.88/124,776.80
  6. Step 6: Final answer
    x = 109,686.76

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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.