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Finding the Fourth Proportional to 89,100.60, 133,650.90 and 75,978.60

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Solution

The fourth proportional to 89,100.60, 133,650.90 and 75,978.60 is: 113,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,100.60 : 133,650.90 = 75,978.60 : x
  2. Step 2: Convert to fraction form
    89,100.60/133,650.90 = 75,978.60/x
  3. Step 3: Cross multiply
    89,100.60x = 133,650.90 × 75,978.60
  4. Step 4: Simplify right side
    89,100.60x = 10,154,608,270.74
  5. Step 5: Solve for x
    x = 10,154,608,270.74/89,100.60
  6. Step 6: Final answer
    x = 113,967.90

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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.