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Finding the Fourth Proportional to 73,203.60, 109,805.40 and 72,766.20

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Solution

The fourth proportional to 73,203.60, 109,805.40 and 72,766.20 is: 109,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,203.60 : 109,805.40 = 72,766.20 : x
  2. Step 2: Convert to fraction form
    73,203.60/109,805.40 = 72,766.20/x
  3. Step 3: Cross multiply
    73,203.60x = 109,805.40 × 72,766.20
  4. Step 4: Simplify right side
    73,203.60x = 7,990,121,697.48
  5. Step 5: Solve for x
    x = 7,990,121,697.48/73,203.60
  6. Step 6: Final answer
    x = 109,149.30

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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.