Home / 72,219.11-108,335.12-18,910.98

Finding the Fourth Proportional to 72,219.11, 108,335.12 and 18,910.98

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Solution

The fourth proportional to 72,219.11, 108,335.12 and 18,910.98 is: 28,368.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,219.11 : 108,335.12 = 18,910.98 : x
  2. Step 2: Convert to fraction form
    72,219.11/108,335.12 = 18,910.98/x
  3. Step 3: Cross multiply
    72,219.11x = 108,335.12 × 18,910.98
  4. Step 4: Simplify right side
    72,219.11x = 2,048,723,193.06
  5. Step 5: Solve for x
    x = 2,048,723,193.06/72,219.11
  6. Step 6: Final answer
    x = 28,368.16

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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.