Home / 81,358.74-122,124.38-72,059.14

Finding the Fourth Proportional to 81,358.74, 122,124.38 and 72,059.14

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Solution

The fourth proportional to 81,358.74, 122,124.38 and 72,059.14 is: 108,165.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,358.74 : 122,124.38 = 72,059.14 : x
  2. Step 2: Convert to fraction form
    81,358.74/122,124.38 = 72,059.14/x
  3. Step 3: Cross multiply
    81,358.74x = 122,124.38 × 72,059.14
  4. Step 4: Simplify right side
    81,358.74x = 8,800,177,795.83
  5. Step 5: Solve for x
    x = 8,800,177,795.83/81,358.74
  6. Step 6: Final answer
    x = 108,165.12

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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.