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Finding the Fourth Proportional to 159,797.79, 220,600.77 and 99,387.92

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Solution

The fourth proportional to 159,797.79, 220,600.77 and 99,387.92 is: 137,204.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,797.79 : 220,600.77 = 99,387.92 : x
  2. Step 2: Convert to fraction form
    159,797.79/220,600.77 = 99,387.92/x
  3. Step 3: Cross multiply
    159,797.79x = 220,600.77 × 99,387.92
  4. Step 4: Simplify right side
    159,797.79x = 21,925,052,232.20
  5. Step 5: Solve for x
    x = 21,925,052,232.20/159,797.79
  6. Step 6: Final answer
    x = 137,204.98

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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.