Home / 100,888.27-139,213.62-57,865.53

Finding the Fourth Proportional to 100,888.27, 139,213.62 and 57,865.53

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Solution

The fourth proportional to 100,888.27, 139,213.62 and 57,865.53 is: 79,847.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,888.27 : 139,213.62 = 57,865.53 : x
  2. Step 2: Convert to fraction form
    100,888.27/139,213.62 = 57,865.53/x
  3. Step 3: Cross multiply
    100,888.27x = 139,213.62 × 57,865.53
  4. Step 4: Simplify right side
    100,888.27x = 8,055,669,904.52
  5. Step 5: Solve for x
    x = 8,055,669,904.52/100,888.27
  6. Step 6: Final answer
    x = 79,847.44

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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.