Home / 104,981.28-157,439.62-30,081.36

Finding the Fourth Proportional to 104,981.28, 157,439.62 and 30,081.36

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Solution

The fourth proportional to 104,981.28, 157,439.62 and 30,081.36 is: 45,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,981.28 : 157,439.62 = 30,081.36 : x
  2. Step 2: Convert to fraction form
    104,981.28/157,439.62 = 30,081.36/x
  3. Step 3: Cross multiply
    104,981.28x = 157,439.62 × 30,081.36
  4. Step 4: Simplify right side
    104,981.28x = 4,735,997,887.48
  5. Step 5: Solve for x
    x = 4,735,997,887.48/104,981.28
  6. Step 6: Final answer
    x = 45,112.78

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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.