Home / 142,563.60-196,731.72-78,895.44

Finding the Fourth Proportional to 142,563.60, 196,731.72 and 78,895.44

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Solution

The fourth proportional to 142,563.60, 196,731.72 and 78,895.44 is: 108,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,563.60 : 196,731.72 = 78,895.44 : x
  2. Step 2: Convert to fraction form
    142,563.60/196,731.72 = 78,895.44/x
  3. Step 3: Cross multiply
    142,563.60x = 196,731.72 × 78,895.44
  4. Step 4: Simplify right side
    142,563.60x = 15,521,235,611.36
  5. Step 5: Solve for x
    x = 15,521,235,611.36/142,563.60
  6. Step 6: Final answer
    x = 108,872.36

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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.