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Finding the Fourth Proportional to 92,637.78, 138,624.50 and 80,200.60

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Solution

The fourth proportional to 92,637.78, 138,624.50 and 80,200.60 is: 120,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,637.78 : 138,624.50 = 80,200.60 : x
  2. Step 2: Convert to fraction form
    92,637.78/138,624.50 = 80,200.60/x
  3. Step 3: Cross multiply
    92,637.78x = 138,624.50 × 80,200.60
  4. Step 4: Simplify right side
    92,637.78x = 11,117,768,074.70
  5. Step 5: Solve for x
    x = 11,117,768,074.70/92,637.78
  6. Step 6: Final answer
    x = 120,013.33

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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.