Home / 158,743.97-219,080.12-87,136.12

Finding the Fourth Proportional to 158,743.97, 219,080.12 and 87,136.12

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Solution

The fourth proportional to 158,743.97, 219,080.12 and 87,136.12 is: 120,255.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,743.97 : 219,080.12 = 87,136.12 : x
  2. Step 2: Convert to fraction form
    158,743.97/219,080.12 = 87,136.12/x
  3. Step 3: Cross multiply
    158,743.97x = 219,080.12 × 87,136.12
  4. Step 4: Simplify right side
    158,743.97x = 19,089,791,625.93
  5. Step 5: Solve for x
    x = 19,089,791,625.93/158,743.97
  6. Step 6: Final answer
    x = 120,255.22

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1.5x scale

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.