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Finding the Fourth Proportional to 121,775.70, 182,663.55 and 92,251.20

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Solution

The fourth proportional to 121,775.70, 182,663.55 and 92,251.20 is: 138,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,775.70 : 182,663.55 = 92,251.20 : x
  2. Step 2: Convert to fraction form
    121,775.70/182,663.55 = 92,251.20/x
  3. Step 3: Cross multiply
    121,775.70x = 182,663.55 × 92,251.20
  4. Step 4: Simplify right side
    121,775.70x = 16,850,931,683.76
  5. Step 5: Solve for x
    x = 16,850,931,683.76/121,775.70
  6. Step 6: Final answer
    x = 138,376.80

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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.