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Finding the Fourth Proportional to 120,759.47, 166,639.74 and 67,040.31

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Solution

The fourth proportional to 120,759.47, 166,639.74 and 67,040.31 is: 92,511.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,759.47 : 166,639.74 = 67,040.31 : x
  2. Step 2: Convert to fraction form
    120,759.47/166,639.74 = 67,040.31/x
  3. Step 3: Cross multiply
    120,759.47x = 166,639.74 × 67,040.31
  4. Step 4: Simplify right side
    120,759.47x = 11,171,579,827.92
  5. Step 5: Solve for x
    x = 11,171,579,827.92/120,759.47
  6. Step 6: Final answer
    x = 92,511.01

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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.