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Finding the Fourth Proportional to 123,394.96, 170,283.72 and 69,676.76

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Solution

The fourth proportional to 123,394.96, 170,283.72 and 69,676.76 is: 96,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,394.96 : 170,283.72 = 69,676.76 : x
  2. Step 2: Convert to fraction form
    123,394.96/170,283.72 = 69,676.76/x
  3. Step 3: Cross multiply
    123,394.96x = 170,283.72 × 69,676.76
  4. Step 4: Simplify right side
    123,394.96x = 11,864,817,890.35
  5. Step 5: Solve for x
    x = 11,864,817,890.35/123,394.96
  6. Step 6: Final answer
    x = 96,153.18

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1.5x scale

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.