Home / 128,228,911.52-176,956,047.77-69,491,573.60

Finding the Fourth Proportional to 128,228,911.52, 176,956,047.77 and 69,491,573.60

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Solution

The fourth proportional to 128,228,911.52, 176,956,047.77 and 69,491,573.60 is: 95,898,452.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,228,911.52 : 176,956,047.77 = 69,491,573.60 : x
  2. Step 2: Convert to fraction form
    128,228,911.52/176,956,047.77 = 69,491,573.60/x
  3. Step 3: Cross multiply
    128,228,911.52x = 176,956,047.77 × 69,491,573.60
  4. Step 4: Simplify right side
    128,228,911.52x = 12,296,954,216,341,832
  5. Step 5: Solve for x
    x = 12,296,954,216,341,832/128,228,911.52
  6. Step 6: Final answer
    x = 95,898,452.78

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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.