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Finding the Fourth Proportional to 113,959.88, 157,279.32 and 68,661.44

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Solution

The fourth proportional to 113,959.88, 157,279.32 and 68,661.44 is: 94,761.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,959.88 : 157,279.32 = 68,661.44 : x
  2. Step 2: Convert to fraction form
    113,959.88/157,279.32 = 68,661.44/x
  3. Step 3: Cross multiply
    113,959.88x = 157,279.32 × 68,661.44
  4. Step 4: Simplify right side
    113,959.88x = 10,799,024,593.42
  5. Step 5: Solve for x
    x = 10,799,024,593.42/113,959.88
  6. Step 6: Final answer
    x = 94,761.64

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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.