Home / 128,910,616.78-177,896,670.35-70,173,727.81

Finding the Fourth Proportional to 128,910,616.78, 177,896,670.35 and 70,173,727.81

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Solution

The fourth proportional to 128,910,616.78, 177,896,670.35 and 70,173,727.81 is: 96,839,754.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,910,616.78 : 177,896,670.35 = 70,173,727.81 : x
  2. Step 2: Convert to fraction form
    128,910,616.78/177,896,670.35 = 70,173,727.81/x
  3. Step 3: Cross multiply
    128,910,616.78x = 177,896,670.35 × 70,173,727.81
  4. Step 4: Simplify right side
    128,910,616.78x = 12,483,672,523,446,198
  5. Step 5: Solve for x
    x = 12,483,672,523,446,198/128,910,616.78
  6. Step 6: Final answer
    x = 96,839,754.83

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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.