Home / 131,339.82-181,255.95-74,769.42

Finding the Fourth Proportional to 131,339.82, 181,255.95 and 74,769.42

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Solution

The fourth proportional to 131,339.82, 181,255.95 and 74,769.42 is: 103,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,339.82 : 181,255.95 = 74,769.42 : x
  2. Step 2: Convert to fraction form
    131,339.82/181,255.95 = 74,769.42/x
  3. Step 3: Cross multiply
    131,339.82x = 181,255.95 × 74,769.42
  4. Step 4: Simplify right side
    131,339.82x = 13,552,402,253.05
  5. Step 5: Solve for x
    x = 13,552,402,253.05/131,339.82
  6. Step 6: Final answer
    x = 103,185.78

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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.