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Finding the Fourth Proportional to 105,506.43, 158,259.90 and 26,620.65

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Solution

The fourth proportional to 105,506.43, 158,259.90 and 26,620.65 is: 39,931.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,506.43 : 158,259.90 = 26,620.65 : x
  2. Step 2: Convert to fraction form
    105,506.43/158,259.90 = 26,620.65/x
  3. Step 3: Cross multiply
    105,506.43x = 158,259.90 × 26,620.65
  4. Step 4: Simplify right side
    105,506.43x = 4,212,981,406.94
  5. Step 5: Solve for x
    x = 4,212,981,406.94/105,506.43
  6. Step 6: Final answer
    x = 39,931.04

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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.