Home / 100,852.12-139,175.94-55,530.28

Finding the Fourth Proportional to 100,852.12, 139,175.94 and 55,530.28

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Solution

The fourth proportional to 100,852.12, 139,175.94 and 55,530.28 is: 76,631.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,852.12 : 139,175.94 = 55,530.28 : x
  2. Step 2: Convert to fraction form
    100,852.12/139,175.94 = 55,530.28/x
  3. Step 3: Cross multiply
    100,852.12x = 139,175.94 × 55,530.28
  4. Step 4: Simplify right side
    100,852.12x = 7,728,478,917.46
  5. Step 5: Solve for x
    x = 7,728,478,917.46/100,852.12
  6. Step 6: Final answer
    x = 76,631.79

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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.