Home / 126,017,139.40-189,025,709.10-85,202,470.60

Finding the Fourth Proportional to 126,017,139.40, 189,025,709.10 and 85,202,470.60

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Solution

The fourth proportional to 126,017,139.40, 189,025,709.10 and 85,202,470.60 is: 127,803,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,017,139.40 : 189,025,709.10 = 85,202,470.60 : x
  2. Step 2: Convert to fraction form
    126,017,139.40/189,025,709.10 = 85,202,470.60/x
  3. Step 3: Cross multiply
    126,017,139.40x = 189,025,709.10 × 85,202,470.60
  4. Step 4: Simplify right side
    126,017,139.40x = 16,105,457,422,236,900
  5. Step 5: Solve for x
    x = 16,105,457,422,236,900/126,017,139.40
  6. Step 6: Final answer
    x = 127,803,705.90

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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.