Home / 128,228,912.52-176,956,049.15-69,491,574.60

Finding the Fourth Proportional to 128,228,912.52, 176,956,049.15 and 69,491,574.60

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Solution

The fourth proportional to 128,228,912.52, 176,956,049.15 and 69,491,574.60 is: 95,898,454.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,228,912.52 : 176,956,049.15 = 69,491,574.60 : x
  2. Step 2: Convert to fraction form
    128,228,912.52/176,956,049.15 = 69,491,574.60/x
  3. Step 3: Cross multiply
    128,228,912.52x = 176,956,049.15 × 69,491,574.60
  4. Step 4: Simplify right side
    128,228,912.52x = 12,296,954,490,428,490
  5. Step 5: Solve for x
    x = 12,296,954,490,428,490/128,228,912.52
  6. Step 6: Final answer
    x = 95,898,454.17

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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.