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Finding the Fourth Proportional to 123,433.92, 170,341.92 and 75,713.58

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Solution

The fourth proportional to 123,433.92, 170,341.92 and 75,713.58 is: 104,486.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,433.92 : 170,341.92 = 75,713.58 : x
  2. Step 2: Convert to fraction form
    123,433.92/170,341.92 = 75,713.58/x
  3. Step 3: Cross multiply
    123,433.92x = 170,341.92 × 75,713.58
  4. Step 4: Simplify right side
    123,433.92x = 12,897,196,587.27
  5. Step 5: Solve for x
    x = 12,897,196,587.27/123,433.92
  6. Step 6: Final answer
    x = 104,486.65

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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.