Home / 100,377.27-138,527.91-57,355.76

Finding the Fourth Proportional to 100,377.27, 138,527.91 and 57,355.76

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Solution

The fourth proportional to 100,377.27, 138,527.91 and 57,355.76 is: 79,155.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,377.27 : 138,527.91 = 57,355.76 : x
  2. Step 2: Convert to fraction form
    100,377.27/138,527.91 = 57,355.76/x
  3. Step 3: Cross multiply
    100,377.27x = 138,527.91 × 57,355.76
  4. Step 4: Simplify right side
    100,377.27x = 7,945,373,905.58
  5. Step 5: Solve for x
    x = 7,945,373,905.58/100,377.27
  6. Step 6: Final answer
    x = 79,155.11

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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.