Home / 109,188.28-163,785.66-42,625.72

Finding the Fourth Proportional to 109,188.28, 163,785.66 and 42,625.72

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Solution

The fourth proportional to 109,188.28, 163,785.66 and 42,625.72 is: 63,939.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,188.28 : 163,785.66 = 42,625.72 : x
  2. Step 2: Convert to fraction form
    109,188.28/163,785.66 = 42,625.72/x
  3. Step 3: Cross multiply
    109,188.28x = 163,785.66 × 42,625.72
  4. Step 4: Simplify right side
    109,188.28x = 6,981,481,683.18
  5. Step 5: Solve for x
    x = 6,981,481,683.18/109,188.28
  6. Step 6: Final answer
    x = 63,939.84

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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.