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Finding the Fourth Proportional to 188,812.10, 283,218.15 and 104,831.30

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Solution

The fourth proportional to 188,812.10, 283,218.15 and 104,831.30 is: 157,246.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,812.10 : 283,218.15 = 104,831.30 : x
  2. Step 2: Convert to fraction form
    188,812.10/283,218.15 = 104,831.30/x
  3. Step 3: Cross multiply
    188,812.10x = 283,218.15 × 104,831.30
  4. Step 4: Simplify right side
    188,812.10x = 29,690,126,848.10
  5. Step 5: Solve for x
    x = 29,690,126,848.10/188,812.10
  6. Step 6: Final answer
    x = 157,246.95

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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.