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Finding the Fourth Proportional to 115,936.16, 159,987.84 and 65,634.08

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Solution

The fourth proportional to 115,936.16, 159,987.84 and 65,634.08 is: 90,572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,936.16 : 159,987.84 = 65,634.08 : x
  2. Step 2: Convert to fraction form
    115,936.16/159,987.84 = 65,634.08/x
  3. Step 3: Cross multiply
    115,936.16x = 159,987.84 × 65,634.08
  4. Step 4: Simplify right side
    115,936.16x = 10,500,654,689.59
  5. Step 5: Solve for x
    x = 10,500,654,689.59/115,936.16
  6. Step 6: Final answer
    x = 90,572.73

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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.