Home / 131,308.76-181,203.62-80,317.74

Finding the Fourth Proportional to 131,308.76, 181,203.62 and 80,317.74

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Solution

The fourth proportional to 131,308.76, 181,203.62 and 80,317.74 is: 110,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,308.76 : 181,203.62 = 80,317.74 : x
  2. Step 2: Convert to fraction form
    131,308.76/181,203.62 = 80,317.74/x
  3. Step 3: Cross multiply
    131,308.76x = 181,203.62 × 80,317.74
  4. Step 4: Simplify right side
    131,308.76x = 14,553,865,516.14
  5. Step 5: Solve for x
    x = 14,553,865,516.14/131,308.76
  6. Step 6: Final answer
    x = 110,836.97

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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.