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Finding the Fourth Proportional to 125,213.40, 188,280.90 and 104,938.20

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Solution

The fourth proportional to 125,213.40, 188,280.90 and 104,938.20 is: 157,793.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,213.40 : 188,280.90 = 104,938.20 : x
  2. Step 2: Convert to fraction form
    125,213.40/188,280.90 = 104,938.20/x
  3. Step 3: Cross multiply
    125,213.40x = 188,280.90 × 104,938.20
  4. Step 4: Simplify right side
    125,213.40x = 19,757,858,740.38
  5. Step 5: Solve for x
    x = 19,757,858,740.38/125,213.40
  6. Step 6: Final answer
    x = 157,793.48

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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.