Home / 103,401.28-155,029.49-52,815.70

Finding the Fourth Proportional to 103,401.28, 155,029.49 and 52,815.70

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Solution

The fourth proportional to 103,401.28, 155,029.49 and 52,815.70 is: 79,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,401.28 : 155,029.49 = 52,815.70 : x
  2. Step 2: Convert to fraction form
    103,401.28/155,029.49 = 52,815.70/x
  3. Step 3: Cross multiply
    103,401.28x = 155,029.49 × 52,815.70
  4. Step 4: Simplify right side
    103,401.28x = 8,187,991,034.99
  5. Step 5: Solve for x
    x = 8,187,991,034.99/103,401.28
  6. Step 6: Final answer
    x = 79,186.55

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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.