Home / 126,737.40-190,106.10-80,196.60

Finding the Fourth Proportional to 126,737.40, 190,106.10 and 80,196.60

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Solution

The fourth proportional to 126,737.40, 190,106.10 and 80,196.60 is: 120,294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,737.40 : 190,106.10 = 80,196.60 : x
  2. Step 2: Convert to fraction form
    126,737.40/190,106.10 = 80,196.60/x
  3. Step 3: Cross multiply
    126,737.40x = 190,106.10 × 80,196.60
  4. Step 4: Simplify right side
    126,737.40x = 15,245,862,859.26
  5. Step 5: Solve for x
    x = 15,245,862,859.26/126,737.40
  6. Step 6: Final answer
    x = 120,294.90

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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.