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Finding the Fourth Proportional to 124,620, 171,976.32 and 68,031.96

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Solution

The fourth proportional to 124,620, 171,976.32 and 68,031.96 is: 93,884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,620 : 171,976.32 = 68,031.96 : x
  2. Step 2: Convert to fraction form
    124,620/171,976.32 = 68,031.96/x
  3. Step 3: Cross multiply
    124,620x = 171,976.32 × 68,031.96
  4. Step 4: Simplify right side
    124,620x = 11,699,886,123.19
  5. Step 5: Solve for x
    x = 11,699,886,123.19/124,620
  6. Step 6: Final answer
    x = 93,884.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.