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Finding the Fourth Proportional to 115,379.87, 159,223.88 and 64,392.06

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Solution

The fourth proportional to 115,379.87, 159,223.88 and 64,392.06 is: 88,860.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,379.87 : 159,223.88 = 64,392.06 : x
  2. Step 2: Convert to fraction form
    115,379.87/159,223.88 = 64,392.06/x
  3. Step 3: Cross multiply
    115,379.87x = 159,223.88 × 64,392.06
  4. Step 4: Simplify right side
    115,379.87x = 10,252,753,634.39
  5. Step 5: Solve for x
    x = 10,252,753,634.39/115,379.87
  6. Step 6: Final answer
    x = 88,860.85

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1.5x scale

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.