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Finding the Fourth Proportional to 124,625.60, 186,916.80 and 45,699.20

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Solution

The fourth proportional to 124,625.60, 186,916.80 and 45,699.20 is: 68,540.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,625.60 : 186,916.80 = 45,699.20 : x
  2. Step 2: Convert to fraction form
    124,625.60/186,916.80 = 45,699.20/x
  3. Step 3: Cross multiply
    124,625.60x = 186,916.80 × 45,699.20
  4. Step 4: Simplify right side
    124,625.60x = 8,541,948,226.56
  5. Step 5: Solve for x
    x = 8,541,948,226.56/124,625.60
  6. Step 6: Final answer
    x = 68,540.88

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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.