Home / 113,810.26-156,961.76-68,479.78

Finding the Fourth Proportional to 113,810.26, 156,961.76 and 68,479.78

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Solution

The fourth proportional to 113,810.26, 156,961.76 and 68,479.78 is: 94,444.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,810.26 : 156,961.76 = 68,479.78 : x
  2. Step 2: Convert to fraction form
    113,810.26/156,961.76 = 68,479.78/x
  3. Step 3: Cross multiply
    113,810.26x = 156,961.76 × 68,479.78
  4. Step 4: Simplify right side
    113,810.26x = 10,748,706,793.21
  5. Step 5: Solve for x
    x = 10,748,706,793.21/113,810.26
  6. Step 6: Final answer
    x = 94,444.09

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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.