Home / 115,373.38-159,216.76-66,986.64

Finding the Fourth Proportional to 115,373.38, 159,216.76 and 66,986.64

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Solution

The fourth proportional to 115,373.38, 159,216.76 and 66,986.64 is: 92,442.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,373.38 : 159,216.76 = 66,986.64 : x
  2. Step 2: Convert to fraction form
    115,373.38/159,216.76 = 66,986.64/x
  3. Step 3: Cross multiply
    115,373.38x = 159,216.76 × 66,986.64
  4. Step 4: Simplify right side
    115,373.38x = 10,665,395,784.09
  5. Step 5: Solve for x
    x = 10,665,395,784.09/115,373.38
  6. Step 6: Final answer
    x = 92,442.43

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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.