Home / 126,719.40-190,079.10-80,178.60

Finding the Fourth Proportional to 126,719.40, 190,079.10 and 80,178.60

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Solution

The fourth proportional to 126,719.40, 190,079.10 and 80,178.60 is: 120,267.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,719.40 : 190,079.10 = 80,178.60 : x
  2. Step 2: Convert to fraction form
    126,719.40/190,079.10 = 80,178.60/x
  3. Step 3: Cross multiply
    126,719.40x = 190,079.10 × 80,178.60
  4. Step 4: Simplify right side
    126,719.40x = 15,240,276,127.26
  5. Step 5: Solve for x
    x = 15,240,276,127.26/126,719.40
  6. Step 6: Final answer
    x = 120,267.90

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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.