Home / 87,940.81-131,954.96-70,189.66

Finding the Fourth Proportional to 87,940.81, 131,954.96 and 70,189.66

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Solution

The fourth proportional to 87,940.81, 131,954.96 and 70,189.66 is: 105,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,940.81 : 131,954.96 = 70,189.66 : x
  2. Step 2: Convert to fraction form
    87,940.81/131,954.96 = 70,189.66/x
  3. Step 3: Cross multiply
    87,940.81x = 131,954.96 × 70,189.66
  4. Step 4: Simplify right side
    87,940.81x = 9,261,873,777.71
  5. Step 5: Solve for x
    x = 9,261,873,777.71/87,940.81
  6. Step 6: Final answer
    x = 105,319.40

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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.