Home / 115,781.78-173,360.40-75,701.36

Finding the Fourth Proportional to 115,781.78, 173,360.40 and 75,701.36

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Solution

The fourth proportional to 115,781.78, 173,360.40 and 75,701.36 is: 113,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,781.78 : 173,360.40 = 75,701.36 : x
  2. Step 2: Convert to fraction form
    115,781.78/173,360.40 = 75,701.36/x
  3. Step 3: Cross multiply
    115,781.78x = 173,360.40 × 75,701.36
  4. Step 4: Simplify right side
    115,781.78x = 13,123,618,050.14
  5. Step 5: Solve for x
    x = 13,123,618,050.14/115,781.78
  6. Step 6: Final answer
    x = 113,347.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.