Home / 115,319.57-159,137.10-67,571.87

Finding the Fourth Proportional to 115,319.57, 159,137.10 and 67,571.87

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Solution

The fourth proportional to 115,319.57, 159,137.10 and 67,571.87 is: 93,246.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,319.57 : 159,137.10 = 67,571.87 : x
  2. Step 2: Convert to fraction form
    115,319.57/159,137.10 = 67,571.87/x
  3. Step 3: Cross multiply
    115,319.57x = 159,137.10 × 67,571.87
  4. Step 4: Simplify right side
    115,319.57x = 10,753,190,637.69
  5. Step 5: Solve for x
    x = 10,753,190,637.69/115,319.57
  6. Step 6: Final answer
    x = 93,246.89

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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.