Home / 112,561.38-168,720.57-73,146.78

Finding the Fourth Proportional to 112,561.38, 168,720.57 and 73,146.78

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Solution

The fourth proportional to 112,561.38, 168,720.57 and 73,146.78 is: 109,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,561.38 : 168,720.57 = 73,146.78 : x
  2. Step 2: Convert to fraction form
    112,561.38/168,720.57 = 73,146.78/x
  3. Step 3: Cross multiply
    112,561.38x = 168,720.57 × 73,146.78
  4. Step 4: Simplify right side
    112,561.38x = 12,341,366,415.26
  5. Step 5: Solve for x
    x = 12,341,366,415.26/112,561.38
  6. Step 6: Final answer
    x = 109,641.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.