Home / 123,561.32-170,507.97-69,843.20

Finding the Fourth Proportional to 123,561.32, 170,507.97 and 69,843.20

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Solution

The fourth proportional to 123,561.32, 170,507.97 and 69,843.20 is: 96,379.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,561.32 : 170,507.97 = 69,843.20 : x
  2. Step 2: Convert to fraction form
    123,561.32/170,507.97 = 69,843.20/x
  3. Step 3: Cross multiply
    123,561.32x = 170,507.97 × 69,843.20
  4. Step 4: Simplify right side
    123,561.32x = 11,908,821,397.76
  5. Step 5: Solve for x
    x = 11,908,821,397.76/123,561.32
  6. Step 6: Final answer
    x = 96,379.85

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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.