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Finding the Fourth Proportional to 103,624.71, 155,437.05 and 68,556.16

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Solution

The fourth proportional to 103,624.71, 155,437.05 and 68,556.16 is: 102,834.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,624.71 : 155,437.05 = 68,556.16 : x
  2. Step 2: Convert to fraction form
    103,624.71/155,437.05 = 68,556.16/x
  3. Step 3: Cross multiply
    103,624.71x = 155,437.05 × 68,556.16
  4. Step 4: Simplify right side
    103,624.71x = 10,656,167,269.73
  5. Step 5: Solve for x
    x = 10,656,167,269.73/103,624.71
  6. Step 6: Final answer
    x = 102,834.23

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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.