Home / 187,126.12-258,406.50-120,174.76

Finding the Fourth Proportional to 187,126.12, 258,406.50 and 120,174.76

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Solution

The fourth proportional to 187,126.12, 258,406.50 and 120,174.76 is: 165,951.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,126.12 : 258,406.50 = 120,174.76 : x
  2. Step 2: Convert to fraction form
    187,126.12/258,406.50 = 120,174.76/x
  3. Step 3: Cross multiply
    187,126.12x = 258,406.50 × 120,174.76
  4. Step 4: Simplify right side
    187,126.12x = 31,053,939,119.94
  5. Step 5: Solve for x
    x = 31,053,939,119.94/187,126.12
  6. Step 6: Final answer
    x = 165,951.92

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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.