Home / 102,722.83-153,821.16-71,089.09

Finding the Fourth Proportional to 102,722.83, 153,821.16 and 71,089.09

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Solution

The fourth proportional to 102,722.83, 153,821.16 and 71,089.09 is: 106,451.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,722.83 : 153,821.16 = 71,089.09 : x
  2. Step 2: Convert to fraction form
    102,722.83/153,821.16 = 71,089.09/x
  3. Step 3: Cross multiply
    102,722.83x = 153,821.16 × 71,089.09
  4. Step 4: Simplify right side
    102,722.83x = 10,935,006,287.14
  5. Step 5: Solve for x
    x = 10,935,006,287.14/102,722.83
  6. Step 6: Final answer
    x = 106,451.57

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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.