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Finding the Fourth Proportional to 163,713.80, 245,628.30 and 80,552.20

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Solution

The fourth proportional to 163,713.80, 245,628.30 and 80,552.20 is: 120,856.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,713.80 : 245,628.30 = 80,552.20 : x
  2. Step 2: Convert to fraction form
    163,713.80/245,628.30 = 80,552.20/x
  3. Step 3: Cross multiply
    163,713.80x = 245,628.30 × 80,552.20
  4. Step 4: Simplify right side
    163,713.80x = 19,785,899,947.26
  5. Step 5: Solve for x
    x = 19,785,899,947.26/163,713.80
  6. Step 6: Final answer
    x = 120,856.64

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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.