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Finding the Fourth Proportional to 159,644.79, 220,309.74 and 91,666.22

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Solution

The fourth proportional to 159,644.79, 220,309.74 and 91,666.22 is: 126,499.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,644.79 : 220,309.74 = 91,666.22 : x
  2. Step 2: Convert to fraction form
    159,644.79/220,309.74 = 91,666.22/x
  3. Step 3: Cross multiply
    159,644.79x = 220,309.74 × 91,666.22
  4. Step 4: Simplify right side
    159,644.79x = 20,194,959,993.43
  5. Step 5: Solve for x
    x = 20,194,959,993.43/159,644.79
  6. Step 6: Final answer
    x = 126,499.34

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1.5x scale

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.