Home / 187,125.12-258,405.12-120,173.76

Finding the Fourth Proportional to 187,125.12, 258,405.12 and 120,173.76

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Solution

The fourth proportional to 187,125.12, 258,405.12 and 120,173.76 is: 165,950.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,125.12 : 258,405.12 = 120,173.76 : x
  2. Step 2: Convert to fraction form
    187,125.12/258,405.12 = 120,173.76/x
  3. Step 3: Cross multiply
    187,125.12x = 258,405.12 × 120,173.76
  4. Step 4: Simplify right side
    187,125.12x = 31,053,514,873.65
  5. Step 5: Solve for x
    x = 31,053,514,873.65/187,125.12
  6. Step 6: Final answer
    x = 165,950.54

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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.