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Finding the Fourth Proportional to 115,197.42, 158,974.04 and 64,208.74

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Solution

The fourth proportional to 115,197.42, 158,974.04 and 64,208.74 is: 88,608.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,197.42 : 158,974.04 = 64,208.74 : x
  2. Step 2: Convert to fraction form
    115,197.42/158,974.04 = 64,208.74/x
  3. Step 3: Cross multiply
    115,197.42x = 158,974.04 × 64,208.74
  4. Step 4: Simplify right side
    115,197.42x = 10,207,522,801.11
  5. Step 5: Solve for x
    x = 10,207,522,801.11/115,197.42
  6. Step 6: Final answer
    x = 88,608.95

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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.