Home / 100,868.32-139,292.76-63,208.18

Finding the Fourth Proportional to 100,868.32, 139,292.76 and 63,208.18

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Solution

The fourth proportional to 100,868.32, 139,292.76 and 63,208.18 is: 87,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,868.32 : 139,292.76 = 63,208.18 : x
  2. Step 2: Convert to fraction form
    100,868.32/139,292.76 = 63,208.18/x
  3. Step 3: Cross multiply
    100,868.32x = 139,292.76 × 63,208.18
  4. Step 4: Simplify right side
    100,868.32x = 8,804,441,846.78
  5. Step 5: Solve for x
    x = 8,804,441,846.78/100,868.32
  6. Step 6: Final answer
    x = 87,286.49

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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.