Home / 100,094.40-138,180.28-57,644.76

Finding the Fourth Proportional to 100,094.40, 138,180.28 and 57,644.76

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Solution

The fourth proportional to 100,094.40, 138,180.28 and 57,644.76 is: 79,578.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,094.40 : 138,180.28 = 57,644.76 : x
  2. Step 2: Convert to fraction form
    100,094.40/138,180.28 = 57,644.76/x
  3. Step 3: Cross multiply
    100,094.40x = 138,180.28 × 57,644.76
  4. Step 4: Simplify right side
    100,094.40x = 7,965,369,077.33
  5. Step 5: Solve for x
    x = 7,965,369,077.33/100,094.40
  6. Step 6: Final answer
    x = 79,578.57

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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.