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Finding the Fourth Proportional to 124,949.80, 187,424.70 and 72,494.20

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Solution

The fourth proportional to 124,949.80, 187,424.70 and 72,494.20 is: 108,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,949.80 : 187,424.70 = 72,494.20 : x
  2. Step 2: Convert to fraction form
    124,949.80/187,424.70 = 72,494.20/x
  3. Step 3: Cross multiply
    124,949.80x = 187,424.70 × 72,494.20
  4. Step 4: Simplify right side
    124,949.80x = 13,587,203,686.74
  5. Step 5: Solve for x
    x = 13,587,203,686.74/124,949.80
  6. Step 6: Final answer
    x = 108,741.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.