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Finding the Fourth Proportional to 128,297.97, 177,044.05 and 70,933.97

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Solution

The fourth proportional to 128,297.97, 177,044.05 and 70,933.97 is: 97,884.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,297.97 : 177,044.05 = 70,933.97 : x
  2. Step 2: Convert to fraction form
    128,297.97/177,044.05 = 70,933.97/x
  3. Step 3: Cross multiply
    128,297.97x = 177,044.05 × 70,933.97
  4. Step 4: Simplify right side
    128,297.97x = 12,558,437,596.65
  5. Step 5: Solve for x
    x = 12,558,437,596.65/128,297.97
  6. Step 6: Final answer
    x = 97,884.93

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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.