Home / 103,418.28-155,142-36,838.74

Finding the Fourth Proportional to 103,418.28, 155,142 and 36,838.74

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Solution

The fourth proportional to 103,418.28, 155,142 and 36,838.74 is: 55,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,418.28 : 155,142 = 36,838.74 : x
  2. Step 2: Convert to fraction form
    103,418.28/155,142 = 36,838.74/x
  3. Step 3: Cross multiply
    103,418.28x = 155,142 × 36,838.74
  4. Step 4: Simplify right side
    103,418.28x = 5,715,235,801.08
  5. Step 5: Solve for x
    x = 5,715,235,801.08/103,418.28
  6. Step 6: Final answer
    x = 55,263.30

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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.