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Finding the Fourth Proportional to 115,176.60, 158,889.38 and 67,400.38

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Solution

The fourth proportional to 115,176.60, 158,889.38 and 67,400.38 is: 92,980.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,176.60 : 158,889.38 = 67,400.38 : x
  2. Step 2: Convert to fraction form
    115,176.60/158,889.38 = 67,400.38/x
  3. Step 3: Cross multiply
    115,176.60x = 158,889.38 × 67,400.38
  4. Step 4: Simplify right side
    115,176.60x = 10,709,204,589.96
  5. Step 5: Solve for x
    x = 10,709,204,589.96/115,176.60
  6. Step 6: Final answer
    x = 92,980.73

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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.