Home / 131,709.43-197,364.58-87,176.64

Finding the Fourth Proportional to 131,709.43, 197,364.58 and 87,176.64

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Solution

The fourth proportional to 131,709.43, 197,364.58 and 87,176.64 is: 130,632.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,709.43 : 197,364.58 = 87,176.64 : x
  2. Step 2: Convert to fraction form
    131,709.43/197,364.58 = 87,176.64/x
  3. Step 3: Cross multiply
    131,709.43x = 197,364.58 × 87,176.64
  4. Step 4: Simplify right side
    131,709.43x = 17,205,581,432.82
  5. Step 5: Solve for x
    x = 17,205,581,432.82/131,709.43
  6. Step 6: Final answer
    x = 130,632.87

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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.