Home / 157,741.90-217,682.69-86,121.92

Finding the Fourth Proportional to 157,741.90, 217,682.69 and 86,121.92

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Solution

The fourth proportional to 157,741.90, 217,682.69 and 86,121.92 is: 118,847.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,741.90 : 217,682.69 = 86,121.92 : x
  2. Step 2: Convert to fraction form
    157,741.90/217,682.69 = 86,121.92/x
  3. Step 3: Cross multiply
    157,741.90x = 217,682.69 × 86,121.92
  4. Step 4: Simplify right side
    157,741.90x = 18,747,251,327.16
  5. Step 5: Solve for x
    x = 18,747,251,327.16/157,741.90
  6. Step 6: Final answer
    x = 118,847.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.