Home / 126,079.40-189,119.10-112,946.60

Finding the Fourth Proportional to 126,079.40, 189,119.10 and 112,946.60

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Solution

The fourth proportional to 126,079.40, 189,119.10 and 112,946.60 is: 169,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,079.40 : 189,119.10 = 112,946.60 : x
  2. Step 2: Convert to fraction form
    126,079.40/189,119.10 = 112,946.60/x
  3. Step 3: Cross multiply
    126,079.40x = 189,119.10 × 112,946.60
  4. Step 4: Simplify right side
    126,079.40x = 21,360,359,340.06
  5. Step 5: Solve for x
    x = 21,360,359,340.06/126,079.40
  6. Step 6: Final answer
    x = 169,419.90

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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.