Home / 128,967,671.88-177,975,398.34-70,230,319.38

Finding the Fourth Proportional to 128,967,671.88, 177,975,398.34 and 70,230,319.38

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Solution

The fourth proportional to 128,967,671.88, 177,975,398.34 and 70,230,319.38 is: 96,917,846.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,967,671.88 : 177,975,398.34 = 70,230,319.38 : x
  2. Step 2: Convert to fraction form
    128,967,671.88/177,975,398.34 = 70,230,319.38/x
  3. Step 3: Cross multiply
    128,967,671.88x = 177,975,398.34 × 70,230,319.38
  4. Step 4: Simplify right side
    128,967,671.88x = 12,499,269,067,200,922
  5. Step 5: Solve for x
    x = 12,499,269,067,200,922/128,967,671.88
  6. Step 6: Final answer
    x = 96,917,846.81

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1.5x scale

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.