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Finding the Fourth Proportional to 124,274.80, 186,245.88 and 45,314.56

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Solution

The fourth proportional to 124,274.80, 186,245.88 and 45,314.56 is: 67,911.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,274.80 : 186,245.88 = 45,314.56 : x
  2. Step 2: Convert to fraction form
    124,274.80/186,245.88 = 45,314.56/x
  3. Step 3: Cross multiply
    124,274.80x = 186,245.88 × 45,314.56
  4. Step 4: Simplify right side
    124,274.80x = 8,439,650,104.01
  5. Step 5: Solve for x
    x = 8,439,650,104.01/124,274.80
  6. Step 6: Final answer
    x = 67,911.19

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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.