Home / 215,811.20-323,704.86-66,051.38

Finding the Fourth Proportional to 215,811.20, 323,704.86 and 66,051.38

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Solution

The fourth proportional to 215,811.20, 323,704.86 and 66,051.38 is: 99,073.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,811.20 : 323,704.86 = 66,051.38 : x
  2. Step 2: Convert to fraction form
    215,811.20/323,704.86 = 66,051.38/x
  3. Step 3: Cross multiply
    215,811.20x = 323,704.86 × 66,051.38
  4. Step 4: Simplify right side
    215,811.20x = 21,381,152,715.71
  5. Step 5: Solve for x
    x = 21,381,152,715.71/215,811.20
  6. Step 6: Final answer
    x = 99,073.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.