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Finding the Fourth Proportional to 120,545.80, 166,357.14 and 66,835.80

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Solution

The fourth proportional to 120,545.80, 166,357.14 and 66,835.80 is: 92,235.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,545.80 : 166,357.14 = 66,835.80 : x
  2. Step 2: Convert to fraction form
    120,545.80/166,357.14 = 66,835.80/x
  3. Step 3: Cross multiply
    120,545.80x = 166,357.14 × 66,835.80
  4. Step 4: Simplify right side
    120,545.80x = 11,118,612,537.61
  5. Step 5: Solve for x
    x = 11,118,612,537.61/120,545.80
  6. Step 6: Final answer
    x = 92,235.59

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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.