Home / 187,278.12-258,380.49-106,648.47

Finding the Fourth Proportional to 187,278.12, 258,380.49 and 106,648.47

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Solution

The fourth proportional to 187,278.12, 258,380.49 and 106,648.47 is: 147,138.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,278.12 : 258,380.49 = 106,648.47 : x
  2. Step 2: Convert to fraction form
    187,278.12/258,380.49 = 106,648.47/x
  3. Step 3: Cross multiply
    187,278.12x = 258,380.49 × 106,648.47
  4. Step 4: Simplify right side
    187,278.12x = 27,555,883,936.35
  5. Step 5: Solve for x
    x = 27,555,883,936.35/187,278.12
  6. Step 6: Final answer
    x = 147,138.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.