Home / 115,890.65-159,921.48-64,891.69

Finding the Fourth Proportional to 115,890.65, 159,921.48 and 64,891.69

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Solution

The fourth proportional to 115,890.65, 159,921.48 and 64,891.69 is: 89,546.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,890.65 : 159,921.48 = 64,891.69 : x
  2. Step 2: Convert to fraction form
    115,890.65/159,921.48 = 64,891.69/x
  3. Step 3: Cross multiply
    115,890.65x = 159,921.48 × 64,891.69
  4. Step 4: Simplify right side
    115,890.65x = 10,377,575,104.50
  5. Step 5: Solve for x
    x = 10,377,575,104.50/115,890.65
  6. Step 6: Final answer
    x = 89,546.27

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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.