Home / 103,424.20-155,213.10-41,139.40

Finding the Fourth Proportional to 103,424.20, 155,213.10 and 41,139.40

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Solution

The fourth proportional to 103,424.20, 155,213.10 and 41,139.40 is: 61,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,424.20 : 155,213.10 = 41,139.40 : x
  2. Step 2: Convert to fraction form
    103,424.20/155,213.10 = 41,139.40/x
  3. Step 3: Cross multiply
    103,424.20x = 155,213.10 × 41,139.40
  4. Step 4: Simplify right side
    103,424.20x = 6,385,373,806.14
  5. Step 5: Solve for x
    x = 6,385,373,806.14/103,424.20
  6. Step 6: Final answer
    x = 61,739.65

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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.