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Finding the Fourth Proportional to 103,616.14, 155,424.20 and 68,547.60

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Solution

The fourth proportional to 103,616.14, 155,424.20 and 68,547.60 is: 102,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.14 : 155,424.20 = 68,547.60 : x
  2. Step 2: Convert to fraction form
    103,616.14/155,424.20 = 68,547.60/x
  3. Step 3: Cross multiply
    103,616.14x = 155,424.20 × 68,547.60
  4. Step 4: Simplify right side
    103,616.14x = 10,653,955,891.92
  5. Step 5: Solve for x
    x = 10,653,955,891.92/103,616.14
  6. Step 6: Final answer
    x = 102,821.39

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1.5x scale

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.