Home / 104,109.14-155,926.61-81,478.65

Finding the Fourth Proportional to 104,109.14, 155,926.61 and 81,478.65

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Solution

The fourth proportional to 104,109.14, 155,926.61 and 81,478.65 is: 122,032.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,109.14 : 155,926.61 = 81,478.65 : x
  2. Step 2: Convert to fraction form
    104,109.14/155,926.61 = 81,478.65/x
  3. Step 3: Cross multiply
    104,109.14x = 155,926.61 × 81,478.65
  4. Step 4: Simplify right side
    104,109.14x = 12,704,689,274.48
  5. Step 5: Solve for x
    x = 12,704,689,274.48/104,109.14
  6. Step 6: Final answer
    x = 122,032.41

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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.