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Finding the Fourth Proportional to 159,639.00, 220,311.12 and 91,656.10

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Solution

The fourth proportional to 159,639.00, 220,311.12 and 91,656.10 is: 126,490.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,639.00 : 220,311.12 = 91,656.10 : x
  2. Step 2: Convert to fraction form
    159,639.00/220,311.12 = 91,656.10/x
  3. Step 3: Cross multiply
    159,639.00x = 220,311.12 × 91,656.10
  4. Step 4: Simplify right side
    159,639.00x = 20,192,858,045.83
  5. Step 5: Solve for x
    x = 20,192,858,045.83/159,639.00
  6. Step 6: Final answer
    x = 126,490.76

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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.