Home / 131,724.70-181,780.34-71,295.86

Finding the Fourth Proportional to 131,724.70, 181,780.34 and 71,295.86

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Solution

The fourth proportional to 131,724.70, 181,780.34 and 71,295.86 is: 98,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,724.70 : 181,780.34 = 71,295.86 : x
  2. Step 2: Convert to fraction form
    131,724.70/181,780.34 = 71,295.86/x
  3. Step 3: Cross multiply
    131,724.70x = 181,780.34 × 71,295.86
  4. Step 4: Simplify right side
    131,724.70x = 12,960,185,769.36
  5. Step 5: Solve for x
    x = 12,960,185,769.36/131,724.70
  6. Step 6: Final answer
    x = 98,388.43

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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.