Home / 131,815.56-197,752.53-72,620.76

Finding the Fourth Proportional to 131,815.56, 197,752.53 and 72,620.76

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Solution

The fourth proportional to 131,815.56, 197,752.53 and 72,620.76 is: 108,947.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,815.56 : 197,752.53 = 72,620.76 : x
  2. Step 2: Convert to fraction form
    131,815.56/197,752.53 = 72,620.76/x
  3. Step 3: Cross multiply
    131,815.56x = 197,752.53 × 72,620.76
  4. Step 4: Simplify right side
    131,815.56x = 14,360,939,020.52
  5. Step 5: Solve for x
    x = 14,360,939,020.52/131,815.56
  6. Step 6: Final answer
    x = 108,947.22

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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.