Home / 101,306.81-151,824.39-78,844.62

Finding the Fourth Proportional to 101,306.81, 151,824.39 and 78,844.62

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Solution

The fourth proportional to 101,306.81, 151,824.39 and 78,844.62 is: 118,161.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,306.81 : 151,824.39 = 78,844.62 : x
  2. Step 2: Convert to fraction form
    101,306.81/151,824.39 = 78,844.62/x
  3. Step 3: Cross multiply
    101,306.81x = 151,824.39 × 78,844.62
  4. Step 4: Simplify right side
    101,306.81x = 11,970,535,439.81
  5. Step 5: Solve for x
    x = 11,970,535,439.81/101,306.81
  6. Step 6: Final answer
    x = 118,161.21

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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.