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Finding the Fourth Proportional to 100,971.20, 151,456.80 and 48,353.60

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Solution

The fourth proportional to 100,971.20, 151,456.80 and 48,353.60 is: 72,530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,971.20 : 151,456.80 = 48,353.60 : x
  2. Step 2: Convert to fraction form
    100,971.20/151,456.80 = 48,353.60/x
  3. Step 3: Cross multiply
    100,971.20x = 151,456.80 × 48,353.60
  4. Step 4: Simplify right side
    100,971.20x = 7,323,481,524.48
  5. Step 5: Solve for x
    x = 7,323,481,524.48/100,971.20
  6. Step 6: Final answer
    x = 72,530.40

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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.