Home / 157,741.80-217,682.55-86,121.81

Finding the Fourth Proportional to 157,741.80, 217,682.55 and 86,121.81

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Solution

The fourth proportional to 157,741.80, 217,682.55 and 86,121.81 is: 118,847.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,741.80 : 217,682.55 = 86,121.81 : x
  2. Step 2: Convert to fraction form
    157,741.80/217,682.55 = 86,121.81/x
  3. Step 3: Cross multiply
    157,741.80x = 217,682.55 × 86,121.81
  4. Step 4: Simplify right side
    157,741.80x = 18,747,215,211.42
  5. Step 5: Solve for x
    x = 18,747,215,211.42/157,741.80
  6. Step 6: Final answer
    x = 118,847.48

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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.