Home / 109,426.92-163,976.16-84,429.48

Finding the Fourth Proportional to 109,426.92, 163,976.16 and 84,429.48

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Solution

The fourth proportional to 109,426.92, 163,976.16 and 84,429.48 is: 126,517.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,426.92 : 163,976.16 = 84,429.48 : x
  2. Step 2: Convert to fraction form
    109,426.92/163,976.16 = 84,429.48/x
  3. Step 3: Cross multiply
    109,426.92x = 163,976.16 × 84,429.48
  4. Step 4: Simplify right side
    109,426.92x = 13,844,421,921.20
  5. Step 5: Solve for x
    x = 13,844,421,921.20/109,426.92
  6. Step 6: Final answer
    x = 126,517.51

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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.