Home / 131,854.24-181,959.06-78,165.64

Finding the Fourth Proportional to 131,854.24, 181,959.06 and 78,165.64

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Solution

The fourth proportional to 131,854.24, 181,959.06 and 78,165.64 is: 107,868.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,854.24 : 181,959.06 = 78,165.64 : x
  2. Step 2: Convert to fraction form
    131,854.24/181,959.06 = 78,165.64/x
  3. Step 3: Cross multiply
    131,854.24x = 181,959.06 × 78,165.64
  4. Step 4: Simplify right side
    131,854.24x = 14,222,946,378.70
  5. Step 5: Solve for x
    x = 14,222,946,378.70/131,854.24
  6. Step 6: Final answer
    x = 107,868.71

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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.