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Finding the Fourth Proportional to 120,737.50, 166,614.68 and 66,289.40

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Solution

The fourth proportional to 120,737.50, 166,614.68 and 66,289.40 is: 91,477.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,737.50 : 166,614.68 = 66,289.40 : x
  2. Step 2: Convert to fraction form
    120,737.50/166,614.68 = 66,289.40/x
  3. Step 3: Cross multiply
    120,737.50x = 166,614.68 × 66,289.40
  4. Step 4: Simplify right side
    120,737.50x = 11,044,786,003.87
  5. Step 5: Solve for x
    x = 11,044,786,003.87/120,737.50
  6. Step 6: Final answer
    x = 91,477.68

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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.