Home / 115,108.38-158,856.87-69,790.71

Finding the Fourth Proportional to 115,108.38, 158,856.87 and 69,790.71

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Solution

The fourth proportional to 115,108.38, 158,856.87 and 69,790.71 is: 96,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,108.38 : 158,856.87 = 69,790.71 : x
  2. Step 2: Convert to fraction form
    115,108.38/158,856.87 = 69,790.71/x
  3. Step 3: Cross multiply
    115,108.38x = 158,856.87 × 69,790.71
  4. Step 4: Simplify right side
    115,108.38x = 11,086,732,951.39
  5. Step 5: Solve for x
    x = 11,086,732,951.39/115,108.38
  6. Step 6: Final answer
    x = 96,315.60

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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.