Home / 103,420.12-155,121.50-41,073.88

Finding the Fourth Proportional to 103,420.12, 155,121.50 and 41,073.88

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Solution

The fourth proportional to 103,420.12, 155,121.50 and 41,073.88 is: 61,607.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,420.12 : 155,121.50 = 41,073.88 : x
  2. Step 2: Convert to fraction form
    103,420.12/155,121.50 = 41,073.88/x
  3. Step 3: Cross multiply
    103,420.12x = 155,121.50 × 41,073.88
  4. Step 4: Simplify right side
    103,420.12x = 6,371,441,876.42
  5. Step 5: Solve for x
    x = 6,371,441,876.42/103,420.12
  6. Step 6: Final answer
    x = 61,607.37

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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.