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Finding the Fourth Proportional to 123,242.92, 170,064.83 and 68,790.13

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Solution

The fourth proportional to 123,242.92, 170,064.83 and 68,790.13 is: 94,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,242.92 : 170,064.83 = 68,790.13 : x
  2. Step 2: Convert to fraction form
    123,242.92/170,064.83 = 68,790.13/x
  3. Step 3: Cross multiply
    123,242.92x = 170,064.83 × 68,790.13
  4. Step 4: Simplify right side
    123,242.92x = 11,698,781,510.94
  5. Step 5: Solve for x
    x = 11,698,781,510.94/123,242.92
  6. Step 6: Final answer
    x = 94,924.57

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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.