Home / 129,267.39-178,346.12-105,352.95

Finding the Fourth Proportional to 129,267.39, 178,346.12 and 105,352.95

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Solution

The fourth proportional to 129,267.39, 178,346.12 and 105,352.95 is: 145,352.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,267.39 : 178,346.12 = 105,352.95 : x
  2. Step 2: Convert to fraction form
    129,267.39/178,346.12 = 105,352.95/x
  3. Step 3: Cross multiply
    129,267.39x = 178,346.12 × 105,352.95
  4. Step 4: Simplify right side
    129,267.39x = 18,789,289,336.29
  5. Step 5: Solve for x
    x = 18,789,289,336.29/129,267.39
  6. Step 6: Final answer
    x = 145,352.12

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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.