Home / 87,939.81-131,953.46-70,188.66

Finding the Fourth Proportional to 87,939.81, 131,953.46 and 70,188.66

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Solution

The fourth proportional to 87,939.81, 131,953.46 and 70,188.66 is: 105,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,939.81 : 131,953.46 = 70,188.66 : x
  2. Step 2: Convert to fraction form
    87,939.81/131,953.46 = 70,188.66/x
  3. Step 3: Cross multiply
    87,939.81x = 131,953.46 × 70,188.66
  4. Step 4: Simplify right side
    87,939.81x = 9,261,636,188.82
  5. Step 5: Solve for x
    x = 9,261,636,188.82/87,939.81
  6. Step 6: Final answer
    x = 105,317.90

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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.