Home / 72,140.14-108,216.38-18,839.22

Finding the Fourth Proportional to 72,140.14, 108,216.38 and 18,839.22

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Solution

The fourth proportional to 72,140.14, 108,216.38 and 18,839.22 is: 28,260.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,140.14 : 108,216.38 = 18,839.22 : x
  2. Step 2: Convert to fraction form
    72,140.14/108,216.38 = 18,839.22/x
  3. Step 3: Cross multiply
    72,140.14x = 108,216.38 × 18,839.22
  4. Step 4: Simplify right side
    72,140.14x = 2,038,712,190.42
  5. Step 5: Solve for x
    x = 2,038,712,190.42/72,140.14
  6. Step 6: Final answer
    x = 28,260.44

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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.