Home / 159,968.72-220,782.51-121,666.46

Finding the Fourth Proportional to 159,968.72, 220,782.51 and 121,666.46

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Solution

The fourth proportional to 159,968.72, 220,782.51 and 121,666.46 is: 167,919.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,968.72 : 220,782.51 = 121,666.46 : x
  2. Step 2: Convert to fraction form
    159,968.72/220,782.51 = 121,666.46/x
  3. Step 3: Cross multiply
    159,968.72x = 220,782.51 × 121,666.46
  4. Step 4: Simplify right side
    159,968.72x = 26,861,825,317.70
  5. Step 5: Solve for x
    x = 26,861,825,317.70/159,968.72
  6. Step 6: Final answer
    x = 167,919.23

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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.