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Finding the Fourth Proportional to 124,418.70, 186,422.85 and 71,736.30

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Solution

The fourth proportional to 124,418.70, 186,422.85 and 71,736.30 is: 107,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,418.70 : 186,422.85 = 71,736.30 : x
  2. Step 2: Convert to fraction form
    124,418.70/186,422.85 = 71,736.30/x
  3. Step 3: Cross multiply
    124,418.70x = 186,422.85 × 71,736.30
  4. Step 4: Simplify right side
    124,418.70x = 13,373,285,494.46
  5. Step 5: Solve for x
    x = 13,373,285,494.46/124,418.70
  6. Step 6: Final answer
    x = 107,486.14

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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.