Home / 131,013.60-196,390.80-64,399.20

Finding the Fourth Proportional to 131,013.60, 196,390.80 and 64,399.20

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Solution

The fourth proportional to 131,013.60, 196,390.80 and 64,399.20 is: 96,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,013.60 : 196,390.80 = 64,399.20 : x
  2. Step 2: Convert to fraction form
    131,013.60/196,390.80 = 64,399.20/x
  3. Step 3: Cross multiply
    131,013.60x = 196,390.80 × 64,399.20
  4. Step 4: Simplify right side
    131,013.60x = 12,647,410,407.36
  5. Step 5: Solve for x
    x = 12,647,410,407.36/131,013.60
  6. Step 6: Final answer
    x = 96,535.10

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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.