Home / 132,778.72-183,243.68-81,117.92

Finding the Fourth Proportional to 132,778.72, 183,243.68 and 81,117.92

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Solution

The fourth proportional to 132,778.72, 183,243.68 and 81,117.92 is: 111,948.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,778.72 : 183,243.68 = 81,117.92 : x
  2. Step 2: Convert to fraction form
    132,778.72/183,243.68 = 81,117.92/x
  3. Step 3: Cross multiply
    132,778.72x = 183,243.68 × 81,117.92
  4. Step 4: Simplify right side
    132,778.72x = 14,864,346,174.75
  5. Step 5: Solve for x
    x = 14,864,346,174.75/132,778.72
  6. Step 6: Final answer
    x = 111,948.26

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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.