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Finding the Fourth Proportional to 96,947.20, 145,420.80 and 73,446.40

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Solution

The fourth proportional to 96,947.20, 145,420.80 and 73,446.40 is: 110,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,947.20 : 145,420.80 = 73,446.40 : x
  2. Step 2: Convert to fraction form
    96,947.20/145,420.80 = 73,446.40/x
  3. Step 3: Cross multiply
    96,947.20x = 145,420.80 × 73,446.40
  4. Step 4: Simplify right side
    96,947.20x = 10,680,634,245.12
  5. Step 5: Solve for x
    x = 10,680,634,245.12/96,947.20
  6. Step 6: Final answer
    x = 110,169.60

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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.