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Finding the Fourth Proportional to 115,055.78, 158,765.54 and 67,299.80

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Solution

The fourth proportional to 115,055.78, 158,765.54 and 67,299.80 is: 92,867.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,055.78 : 158,765.54 = 67,299.80 : x
  2. Step 2: Convert to fraction form
    115,055.78/158,765.54 = 67,299.80/x
  3. Step 3: Cross multiply
    115,055.78x = 158,765.54 × 67,299.80
  4. Step 4: Simplify right side
    115,055.78x = 10,684,887,958.57
  5. Step 5: Solve for x
    x = 10,684,887,958.57/115,055.78
  6. Step 6: Final answer
    x = 92,867.03

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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.