Home / 74,189.39-102,381.20-40,198.71

Finding the Fourth Proportional to 74,189.39, 102,381.20 and 40,198.71

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Solution

The fourth proportional to 74,189.39, 102,381.20 and 40,198.71 is: 55,474.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,189.39 : 102,381.20 = 40,198.71 : x
  2. Step 2: Convert to fraction form
    74,189.39/102,381.20 = 40,198.71/x
  3. Step 3: Cross multiply
    74,189.39x = 102,381.20 × 40,198.71
  4. Step 4: Simplify right side
    74,189.39x = 4,115,592,501.93
  5. Step 5: Solve for x
    x = 4,115,592,501.93/74,189.39
  6. Step 6: Final answer
    x = 55,474.14

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1.5x scale

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.