Home / 100,348.24-138,484.82-57,334.81

Finding the Fourth Proportional to 100,348.24, 138,484.82 and 57,334.81

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Solution

The fourth proportional to 100,348.24, 138,484.82 and 57,334.81 is: 79,124.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,348.24 : 138,484.82 = 57,334.81 : x
  2. Step 2: Convert to fraction form
    100,348.24/138,484.82 = 57,334.81/x
  3. Step 3: Cross multiply
    100,348.24x = 138,484.82 × 57,334.81
  4. Step 4: Simplify right side
    100,348.24x = 7,940,000,842.58
  5. Step 5: Solve for x
    x = 7,940,000,842.58/100,348.24
  6. Step 6: Final answer
    x = 79,124.47

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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.