Home / 103,747.40-155,621.10-103,091.30

Finding the Fourth Proportional to 103,747.40, 155,621.10 and 103,091.30

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Solution

The fourth proportional to 103,747.40, 155,621.10 and 103,091.30 is: 154,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,747.40 : 155,621.10 = 103,091.30 : x
  2. Step 2: Convert to fraction form
    103,747.40/155,621.10 = 103,091.30/x
  3. Step 3: Cross multiply
    103,747.40x = 155,621.10 × 103,091.30
  4. Step 4: Simplify right side
    103,747.40x = 16,043,181,506.43
  5. Step 5: Solve for x
    x = 16,043,181,506.43/103,747.40
  6. Step 6: Final answer
    x = 154,636.95

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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.