Home / 74,134.20-102,305.23-40,142.69

Finding the Fourth Proportional to 74,134.20, 102,305.23 and 40,142.69

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Solution

The fourth proportional to 74,134.20, 102,305.23 and 40,142.69 is: 55,396.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,134.20 : 102,305.23 = 40,142.69 : x
  2. Step 2: Convert to fraction form
    74,134.20/102,305.23 = 40,142.69/x
  3. Step 3: Cross multiply
    74,134.20x = 102,305.23 × 40,142.69
  4. Step 4: Simplify right side
    74,134.20x = 4,106,806,905.03
  5. Step 5: Solve for x
    x = 4,106,806,905.03/74,134.20
  6. Step 6: Final answer
    x = 55,396.92

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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.