Home / 131,769.20-197,653.80-72,574.40

Finding the Fourth Proportional to 131,769.20, 197,653.80 and 72,574.40

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Solution

The fourth proportional to 131,769.20, 197,653.80 and 72,574.40 is: 108,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,769.20 : 197,653.80 = 72,574.40 : x
  2. Step 2: Convert to fraction form
    131,769.20/197,653.80 = 72,574.40/x
  3. Step 3: Cross multiply
    131,769.20x = 197,653.80 × 72,574.40
  4. Step 4: Simplify right side
    131,769.20x = 14,344,605,942.72
  5. Step 5: Solve for x
    x = 14,344,605,942.72/131,769.20
  6. Step 6: Final answer
    x = 108,861.60

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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.