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Finding the Fourth Proportional to 123,894.80, 170,966.40 and 67,304.96

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Solution

The fourth proportional to 123,894.80, 170,966.40 and 67,304.96 is: 92,876.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,894.80 : 170,966.40 = 67,304.96 : x
  2. Step 2: Convert to fraction form
    123,894.80/170,966.40 = 67,304.96/x
  3. Step 3: Cross multiply
    123,894.80x = 170,966.40 × 67,304.96
  4. Step 4: Simplify right side
    123,894.80x = 11,506,886,713.34
  5. Step 5: Solve for x
    x = 11,506,886,713.34/123,894.80
  6. Step 6: Final answer
    x = 92,876.27

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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.