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Finding the Fourth Proportional to 120,912.67, 166,807.70 and 75,511.84

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Solution

The fourth proportional to 120,912.67, 166,807.70 and 75,511.84 is: 104,174.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,912.67 : 166,807.70 = 75,511.84 : x
  2. Step 2: Convert to fraction form
    120,912.67/166,807.70 = 75,511.84/x
  3. Step 3: Cross multiply
    120,912.67x = 166,807.70 × 75,511.84
  4. Step 4: Simplify right side
    120,912.67x = 12,595,955,975.61
  5. Step 5: Solve for x
    x = 12,595,955,975.61/120,912.67
  6. Step 6: Final answer
    x = 104,174.00

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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.