Home / 131,709.31-197,364.39-87,176.52

Finding the Fourth Proportional to 131,709.31, 197,364.39 and 87,176.52

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Solution

The fourth proportional to 131,709.31, 197,364.39 and 87,176.52 is: 130,632.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,709.31 : 197,364.39 = 87,176.52 : x
  2. Step 2: Convert to fraction form
    131,709.31/197,364.39 = 87,176.52/x
  3. Step 3: Cross multiply
    131,709.31x = 197,364.39 × 87,176.52
  4. Step 4: Simplify right side
    131,709.31x = 17,205,540,416.65
  5. Step 5: Solve for x
    x = 17,205,540,416.65/131,709.31
  6. Step 6: Final answer
    x = 130,632.69

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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.