Home / 128,185,786.26-176,896,145.69-69,449,911.20

Finding the Fourth Proportional to 128,185,786.26, 176,896,145.69 and 69,449,911.20

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Solution

The fourth proportional to 128,185,786.26, 176,896,145.69 and 69,449,911.20 is: 95,840,747.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185,786.26 : 176,896,145.69 = 69,449,911.20 : x
  2. Step 2: Convert to fraction form
    128,185,786.26/176,896,145.69 = 69,449,911.20/x
  3. Step 3: Cross multiply
    128,185,786.26x = 176,896,145.69 × 69,449,911.20
  4. Step 4: Simplify right side
    128,185,786.26x = 12,285,421,609,792,764
  5. Step 5: Solve for x
    x = 12,285,421,609,792,764/128,185,786.26
  6. Step 6: Final answer
    x = 95,840,747.78

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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.