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Finding the Fourth Proportional to 115,279.68, 159,086.86 and 64,295.65

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Solution

The fourth proportional to 115,279.68, 159,086.86 and 64,295.65 is: 88,728.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,279.68 : 159,086.86 = 64,295.65 : x
  2. Step 2: Convert to fraction form
    115,279.68/159,086.86 = 64,295.65/x
  3. Step 3: Cross multiply
    115,279.68x = 159,086.86 × 64,295.65
  4. Step 4: Simplify right side
    115,279.68x = 10,228,593,070.16
  5. Step 5: Solve for x
    x = 10,228,593,070.16/115,279.68
  6. Step 6: Final answer
    x = 88,728.50

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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.