Home / 109,187.28-163,784.16-42,624.72

Finding the Fourth Proportional to 109,187.28, 163,784.16 and 42,624.72

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Solution

The fourth proportional to 109,187.28, 163,784.16 and 42,624.72 is: 63,938.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,187.28 : 163,784.16 = 42,624.72 : x
  2. Step 2: Convert to fraction form
    109,187.28/163,784.16 = 42,624.72/x
  3. Step 3: Cross multiply
    109,187.28x = 163,784.16 × 42,624.72
  4. Step 4: Simplify right side
    109,187.28x = 6,981,253,960.44
  5. Step 5: Solve for x
    x = 6,981,253,960.44/109,187.28
  6. Step 6: Final answer
    x = 63,938.34

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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.