Home / 113,809.26-156,960.38-68,478.78

Finding the Fourth Proportional to 113,809.26, 156,960.38 and 68,478.78

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Solution

The fourth proportional to 113,809.26, 156,960.38 and 68,478.78 is: 94,442.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,809.26 : 156,960.38 = 68,478.78 : x
  2. Step 2: Convert to fraction form
    113,809.26/156,960.38 = 68,478.78/x
  3. Step 3: Cross multiply
    113,809.26x = 156,960.38 × 68,478.78
  4. Step 4: Simplify right side
    113,809.26x = 10,748,455,330.74
  5. Step 5: Solve for x
    x = 10,748,455,330.74/113,809.26
  6. Step 6: Final answer
    x = 94,442.71

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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.