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Finding the Fourth Proportional to 115,287.59, 159,069.78 and 69,964.56

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Solution

The fourth proportional to 115,287.59, 159,069.78 and 69,964.56 is: 96,534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,287.59 : 159,069.78 = 69,964.56 : x
  2. Step 2: Convert to fraction form
    115,287.59/159,069.78 = 69,964.56/x
  3. Step 3: Cross multiply
    115,287.59x = 159,069.78 × 69,964.56
  4. Step 4: Simplify right side
    115,287.59x = 11,129,247,167.00
  5. Step 5: Solve for x
    x = 11,129,247,167.00/115,287.59
  6. Step 6: Final answer
    x = 96,534.65

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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.