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Finding the Fourth Proportional to 124,654.56, 186,683.82 and 71,904.12

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Solution

The fourth proportional to 124,654.56, 186,683.82 and 71,904.12 is: 107,684.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,654.56 : 186,683.82 = 71,904.12 : x
  2. Step 2: Convert to fraction form
    124,654.56/186,683.82 = 71,904.12/x
  3. Step 3: Cross multiply
    124,654.56x = 186,683.82 × 71,904.12
  4. Step 4: Simplify right side
    124,654.56x = 13,423,334,861.92
  5. Step 5: Solve for x
    x = 13,423,334,861.92/124,654.56
  6. Step 6: Final answer
    x = 107,684.27

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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.