Home / 188,143.20-282,214.62-81,439.74

Finding the Fourth Proportional to 188,143.20, 282,214.62 and 81,439.74

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Solution

The fourth proportional to 188,143.20, 282,214.62 and 81,439.74 is: 122,159.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,143.20 : 282,214.62 = 81,439.74 : x
  2. Step 2: Convert to fraction form
    188,143.20/282,214.62 = 81,439.74/x
  3. Step 3: Cross multiply
    188,143.20x = 282,214.62 × 81,439.74
  4. Step 4: Simplify right side
    188,143.20x = 22,983,485,277.00
  5. Step 5: Solve for x
    x = 22,983,485,277.00/188,143.20
  6. Step 6: Final answer
    x = 122,159.53

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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.