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Finding the Fourth Proportional to 103,758.40, 155,279.20 and 62,235.20

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Solution

The fourth proportional to 103,758.40, 155,279.20 and 62,235.20 is: 93,137.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,758.40 : 155,279.20 = 62,235.20 : x
  2. Step 2: Convert to fraction form
    103,758.40/155,279.20 = 62,235.20/x
  3. Step 3: Cross multiply
    103,758.40x = 155,279.20 × 62,235.20
  4. Step 4: Simplify right side
    103,758.40x = 9,663,832,067.84
  5. Step 5: Solve for x
    x = 9,663,832,067.84/103,758.40
  6. Step 6: Final answer
    x = 93,137.83

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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.