Home / 111,318-153,619.20-60,331.56

Finding the Fourth Proportional to 111,318, 153,619.20 and 60,331.56

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Solution

The fourth proportional to 111,318, 153,619.20 and 60,331.56 is: 83,257.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,318 : 153,619.20 = 60,331.56 : x
  2. Step 2: Convert to fraction form
    111,318/153,619.20 = 60,331.56/x
  3. Step 3: Cross multiply
    111,318x = 153,619.20 × 60,331.56
  4. Step 4: Simplify right side
    111,318x = 9,268,085,981.95
  5. Step 5: Solve for x
    x = 9,268,085,981.95/111,318
  6. Step 6: Final answer
    x = 83,257.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.