Home / 123,712.56-170,722.62-67,122.72

Finding the Fourth Proportional to 123,712.56, 170,722.62 and 67,122.72

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Solution

The fourth proportional to 123,712.56, 170,722.62 and 67,122.72 is: 92,628.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,712.56 : 170,722.62 = 67,122.72 : x
  2. Step 2: Convert to fraction form
    123,712.56/170,722.62 = 67,122.72/x
  3. Step 3: Cross multiply
    123,712.56x = 170,722.62 × 67,122.72
  4. Step 4: Simplify right side
    123,712.56x = 11,459,366,619.93
  5. Step 5: Solve for x
    x = 11,459,366,619.93/123,712.56
  6. Step 6: Final answer
    x = 92,628.97

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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.