Home / 100,204.09-138,281.78-54,263.81

Finding the Fourth Proportional to 100,204.09, 138,281.78 and 54,263.81

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Solution

The fourth proportional to 100,204.09, 138,281.78 and 54,263.81 is: 74,884.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,204.09 : 138,281.78 = 54,263.81 : x
  2. Step 2: Convert to fraction form
    100,204.09/138,281.78 = 54,263.81/x
  3. Step 3: Cross multiply
    100,204.09x = 138,281.78 × 54,263.81
  4. Step 4: Simplify right side
    100,204.09x = 7,503,696,236.38
  5. Step 5: Solve for x
    x = 7,503,696,236.38/100,204.09
  6. Step 6: Final answer
    x = 74,884.13

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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.