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Finding the Fourth Proportional to 125,086.70, 187,573.38 and 53,975.78

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Solution

The fourth proportional to 125,086.70, 187,573.38 and 53,975.78 is: 80,939.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,086.70 : 187,573.38 = 53,975.78 : x
  2. Step 2: Convert to fraction form
    125,086.70/187,573.38 = 53,975.78/x
  3. Step 3: Cross multiply
    125,086.70x = 187,573.38 × 53,975.78
  4. Step 4: Simplify right side
    125,086.70x = 10,124,419,492.74
  5. Step 5: Solve for x
    x = 10,124,419,492.74/125,086.70
  6. Step 6: Final answer
    x = 80,939.22

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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.