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Finding the Fourth Proportional to 100,888.83, 139,224.55 and 63,183.87

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Solution

The fourth proportional to 100,888.83, 139,224.55 and 63,183.87 is: 87,192.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,888.83 : 139,224.55 = 63,183.87 : x
  2. Step 2: Convert to fraction form
    100,888.83/139,224.55 = 63,183.87/x
  3. Step 3: Cross multiply
    100,888.83x = 139,224.55 × 63,183.87
  4. Step 4: Simplify right side
    100,888.83x = 8,796,745,868.01
  5. Step 5: Solve for x
    x = 8,796,745,868.01/100,888.83
  6. Step 6: Final answer
    x = 87,192.47

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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.