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Finding the Fourth Proportional to 115,139.44, 158,892.76 and 66,750.80

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Solution

The fourth proportional to 115,139.44, 158,892.76 and 66,750.80 is: 92,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,139.44 : 158,892.76 = 66,750.80 : x
  2. Step 2: Convert to fraction form
    115,139.44/158,892.76 = 66,750.80/x
  3. Step 3: Cross multiply
    115,139.44x = 158,892.76 × 66,750.80
  4. Step 4: Simplify right side
    115,139.44x = 10,606,218,844.21
  5. Step 5: Solve for x
    x = 10,606,218,844.21/115,139.44
  6. Step 6: Final answer
    x = 92,116.30

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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.