Home / 103,638.20-155,521.30-41,302.20

Finding the Fourth Proportional to 103,638.20, 155,521.30 and 41,302.20

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Solution

The fourth proportional to 103,638.20, 155,521.30 and 41,302.20 is: 61,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.20 : 155,521.30 = 41,302.20 : x
  2. Step 2: Convert to fraction form
    103,638.20/155,521.30 = 41,302.20/x
  3. Step 3: Cross multiply
    103,638.20x = 155,521.30 × 41,302.20
  4. Step 4: Simplify right side
    103,638.20x = 6,423,371,836.86
  5. Step 5: Solve for x
    x = 6,423,371,836.86/103,638.20
  6. Step 6: Final answer
    x = 61,978.81

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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.