Home / 187,105.15-280,868.05-74,864.55

Finding the Fourth Proportional to 187,105.15, 280,868.05 and 74,864.55

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Solution

The fourth proportional to 187,105.15, 280,868.05 and 74,864.55 is: 112,380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,105.15 : 280,868.05 = 74,864.55 : x
  2. Step 2: Convert to fraction form
    187,105.15/280,868.05 = 74,864.55/x
  3. Step 3: Cross multiply
    187,105.15x = 280,868.05 × 74,864.55
  4. Step 4: Simplify right side
    187,105.15x = 21,027,060,172.63
  5. Step 5: Solve for x
    x = 21,027,060,172.63/187,105.15
  6. Step 6: Final answer
    x = 112,380.98

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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.