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Finding the Fourth Proportional to 123,305.94, 170,149.17 and 71,612.94

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Solution

The fourth proportional to 123,305.94, 170,149.17 and 71,612.94 is: 98,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,305.94 : 170,149.17 = 71,612.94 : x
  2. Step 2: Convert to fraction form
    123,305.94/170,149.17 = 71,612.94/x
  3. Step 3: Cross multiply
    123,305.94x = 170,149.17 × 71,612.94
  4. Step 4: Simplify right side
    123,305.94x = 12,184,882,302.26
  5. Step 5: Solve for x
    x = 12,184,882,302.26/123,305.94
  6. Step 6: Final answer
    x = 98,818.29

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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.