Home / 115,377.89-159,229.49-64,400.54

Finding the Fourth Proportional to 115,377.89, 159,229.49 and 64,400.54

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Solution

The fourth proportional to 115,377.89, 159,229.49 and 64,400.54 is: 88,877.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,377.89 : 159,229.49 = 64,400.54 : x
  2. Step 2: Convert to fraction form
    115,377.89/159,229.49 = 64,400.54/x
  3. Step 3: Cross multiply
    115,377.89x = 159,229.49 × 64,400.54
  4. Step 4: Simplify right side
    115,377.89x = 10,254,464,021.77
  5. Step 5: Solve for x
    x = 10,254,464,021.77/115,377.89
  6. Step 6: Final answer
    x = 88,877.21

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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.