Home / 78,125.22-117,187.89-18,960.95

Finding the Fourth Proportional to 78,125.22, 117,187.89 and 18,960.95

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Solution

The fourth proportional to 78,125.22, 117,187.89 and 18,960.95 is: 28,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,125.22 : 117,187.89 = 18,960.95 : x
  2. Step 2: Convert to fraction form
    78,125.22/117,187.89 = 18,960.95/x
  3. Step 3: Cross multiply
    78,125.22x = 117,187.89 × 18,960.95
  4. Step 4: Simplify right side
    78,125.22x = 2,221,993,503.70
  5. Step 5: Solve for x
    x = 2,221,993,503.70/78,125.22
  6. Step 6: Final answer
    x = 28,441.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.