Home / 128,885,017.28-177,861,313.97-70,148,103.54

Finding the Fourth Proportional to 128,885,017.28, 177,861,313.97 and 70,148,103.54

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Solution

The fourth proportional to 128,885,017.28, 177,861,313.97 and 70,148,103.54 is: 96,804,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,885,017.28 : 177,861,313.97 = 70,148,103.54 : x
  2. Step 2: Convert to fraction form
    128,885,017.28/177,861,313.97 = 70,148,103.54/x
  3. Step 3: Cross multiply
    128,885,017.28x = 177,861,313.97 × 70,148,103.54
  4. Step 4: Simplify right side
    128,885,017.28x = 12,476,633,867,238,702
  5. Step 5: Solve for x
    x = 12,476,633,867,238,702/128,885,017.28
  6. Step 6: Final answer
    x = 96,804,377.51

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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.