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Finding the Fourth Proportional to 115,391.52, 159,202.80 and 64,395.84

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Solution

The fourth proportional to 115,391.52, 159,202.80 and 64,395.84 is: 88,845.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,391.52 : 159,202.80 = 64,395.84 : x
  2. Step 2: Convert to fraction form
    115,391.52/159,202.80 = 64,395.84/x
  3. Step 3: Cross multiply
    115,391.52x = 159,202.80 × 64,395.84
  4. Step 4: Simplify right side
    115,391.52x = 10,251,998,036.35
  5. Step 5: Solve for x
    x = 10,251,998,036.35/115,391.52
  6. Step 6: Final answer
    x = 88,845.33

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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.