Home / 113,415.26-156,561.54-80,730.96

Finding the Fourth Proportional to 113,415.26, 156,561.54 and 80,730.96

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Solution

The fourth proportional to 113,415.26, 156,561.54 and 80,730.96 is: 111,443.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,415.26 : 156,561.54 = 80,730.96 : x
  2. Step 2: Convert to fraction form
    113,415.26/156,561.54 = 80,730.96/x
  3. Step 3: Cross multiply
    113,415.26x = 156,561.54 × 80,730.96
  4. Step 4: Simplify right side
    113,415.26x = 12,639,363,423.28
  5. Step 5: Solve for x
    x = 12,639,363,423.28/113,415.26
  6. Step 6: Final answer
    x = 111,443.23

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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.