Home / 119,016.24-164,092.95-87,129.78

Finding the Fourth Proportional to 119,016.24, 164,092.95 and 87,129.78

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Solution

The fourth proportional to 119,016.24, 164,092.95 and 87,129.78 is: 120,129.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,016.24 : 164,092.95 = 87,129.78 : x
  2. Step 2: Convert to fraction form
    119,016.24/164,092.95 = 87,129.78/x
  3. Step 3: Cross multiply
    119,016.24x = 164,092.95 × 87,129.78
  4. Step 4: Simplify right side
    119,016.24x = 14,297,382,633.05
  5. Step 5: Solve for x
    x = 14,297,382,633.05/119,016.24
  6. Step 6: Final answer
    x = 120,129.68

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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.