Home / 117,685.12-162,294.78-90,785.08

Finding the Fourth Proportional to 117,685.12, 162,294.78 and 90,785.08

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Solution

The fourth proportional to 117,685.12, 162,294.78 and 90,785.08 is: 125,198.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,685.12 : 162,294.78 = 90,785.08 : x
  2. Step 2: Convert to fraction form
    117,685.12/162,294.78 = 90,785.08/x
  3. Step 3: Cross multiply
    117,685.12x = 162,294.78 × 90,785.08
  4. Step 4: Simplify right side
    117,685.12x = 14,733,944,585.88
  5. Step 5: Solve for x
    x = 14,733,944,585.88/117,685.12
  6. Step 6: Final answer
    x = 125,198.02

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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.