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Finding the Fourth Proportional to 92,120.68, 138,181.02 and 50,830.12

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Solution

The fourth proportional to 92,120.68, 138,181.02 and 50,830.12 is: 76,245.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,120.68 : 138,181.02 = 50,830.12 : x
  2. Step 2: Convert to fraction form
    92,120.68/138,181.02 = 50,830.12/x
  3. Step 3: Cross multiply
    92,120.68x = 138,181.02 × 50,830.12
  4. Step 4: Simplify right side
    92,120.68x = 7,023,757,828.32
  5. Step 5: Solve for x
    x = 7,023,757,828.32/92,120.68
  6. Step 6: Final answer
    x = 76,245.18

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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.