Home / 153,915.26-231,014.81-78,067.03

Finding the Fourth Proportional to 153,915.26, 231,014.81 and 78,067.03

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Solution

The fourth proportional to 153,915.26, 231,014.81 and 78,067.03 is: 117,172.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,915.26 : 231,014.81 = 78,067.03 : x
  2. Step 2: Convert to fraction form
    153,915.26/231,014.81 = 78,067.03/x
  3. Step 3: Cross multiply
    153,915.26x = 231,014.81 × 78,067.03
  4. Step 4: Simplify right side
    153,915.26x = 18,034,640,102.71
  5. Step 5: Solve for x
    x = 18,034,640,102.71/153,915.26
  6. Step 6: Final answer
    x = 117,172.53

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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.