Home / 103,428.20-155,219.10-41,143.40

Finding the Fourth Proportional to 103,428.20, 155,219.10 and 41,143.40

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Solution

The fourth proportional to 103,428.20, 155,219.10 and 41,143.40 is: 61,745.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,428.20 : 155,219.10 = 41,143.40 : x
  2. Step 2: Convert to fraction form
    103,428.20/155,219.10 = 41,143.40/x
  3. Step 3: Cross multiply
    103,428.20x = 155,219.10 × 41,143.40
  4. Step 4: Simplify right side
    103,428.20x = 6,386,241,518.94
  5. Step 5: Solve for x
    x = 6,386,241,518.94/103,428.20
  6. Step 6: Final answer
    x = 61,745.65

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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.