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Finding the Fourth Proportional to 96,800.20, 145,200.30 and 81,248.20

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Solution

The fourth proportional to 96,800.20, 145,200.30 and 81,248.20 is: 121,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,800.20 : 145,200.30 = 81,248.20 : x
  2. Step 2: Convert to fraction form
    96,800.20/145,200.30 = 81,248.20/x
  3. Step 3: Cross multiply
    96,800.20x = 145,200.30 × 81,248.20
  4. Step 4: Simplify right side
    96,800.20x = 11,797,263,014.46
  5. Step 5: Solve for x
    x = 11,797,263,014.46/96,800.20
  6. Step 6: Final answer
    x = 121,872.30

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1.5x scale

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.