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Finding the Fourth Proportional to 163,753.80, 245,630.70 and 80,630.60

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Solution

The fourth proportional to 163,753.80, 245,630.70 and 80,630.60 is: 120,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,753.80 : 245,630.70 = 80,630.60 : x
  2. Step 2: Convert to fraction form
    163,753.80/245,630.70 = 80,630.60/x
  3. Step 3: Cross multiply
    163,753.80x = 245,630.70 × 80,630.60
  4. Step 4: Simplify right side
    163,753.80x = 19,805,350,719.42
  5. Step 5: Solve for x
    x = 19,805,350,719.42/163,753.80
  6. Step 6: Final answer
    x = 120,945.90

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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.