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Finding the Fourth Proportional to 124,420.70, 186,425.85 and 71,738.30

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Solution

The fourth proportional to 124,420.70, 186,425.85 and 71,738.30 is: 107,489.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,420.70 : 186,425.85 = 71,738.30 : x
  2. Step 2: Convert to fraction form
    124,420.70/186,425.85 = 71,738.30/x
  3. Step 3: Cross multiply
    124,420.70x = 186,425.85 × 71,738.30
  4. Step 4: Simplify right side
    124,420.70x = 13,373,873,555.06
  5. Step 5: Solve for x
    x = 13,373,873,555.06/124,420.70
  6. Step 6: Final answer
    x = 107,489.14

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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.