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Finding the Fourth Proportional to 167,661.87, 251,489.16 and 78,866.16

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Solution

The fourth proportional to 167,661.87, 251,489.16 and 78,866.16 is: 118,297.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,661.87 : 251,489.16 = 78,866.16 : x
  2. Step 2: Convert to fraction form
    167,661.87/251,489.16 = 78,866.16/x
  3. Step 3: Cross multiply
    167,661.87x = 251,489.16 × 78,866.16
  4. Step 4: Simplify right side
    167,661.87x = 19,833,984,330.83
  5. Step 5: Solve for x
    x = 19,833,984,330.83/167,661.87
  6. Step 6: Final answer
    x = 118,297.53

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1.5x scale

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.