Home / 128,385,356.22-177,156,844.56-71,873,196.66

Finding the Fourth Proportional to 128,385,356.22, 177,156,844.56 and 71,873,196.66

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Solution

The fourth proportional to 128,385,356.22, 177,156,844.56 and 71,873,196.66 is: 99,176,643.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,385,356.22 : 177,156,844.56 = 71,873,196.66 : x
  2. Step 2: Convert to fraction form
    128,385,356.22/177,156,844.56 = 71,873,196.66/x
  3. Step 3: Cross multiply
    128,385,356.22x = 177,156,844.56 × 71,873,196.66
  4. Step 4: Simplify right side
    128,385,356.22x = 12,732,828,728,725,930
  5. Step 5: Solve for x
    x = 12,732,828,728,725,930/128,385,356.22
  6. Step 6: Final answer
    x = 99,176,643.69

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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.