Home / 142,285.20-196,353.52-78,622.44

Finding the Fourth Proportional to 142,285.20, 196,353.52 and 78,622.44

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Solution

The fourth proportional to 142,285.20, 196,353.52 and 78,622.44 is: 108,498.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,285.20 : 196,353.52 = 78,622.44 : x
  2. Step 2: Convert to fraction form
    142,285.20/196,353.52 = 78,622.44/x
  3. Step 3: Cross multiply
    142,285.20x = 196,353.52 × 78,622.44
  4. Step 4: Simplify right side
    142,285.20x = 15,437,792,844.99
  5. Step 5: Solve for x
    x = 15,437,792,844.99/142,285.20
  6. Step 6: Final answer
    x = 108,498.94

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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.