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Finding the Fourth Proportional to 120,605.53, 166,445.85 and 66,907.85

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Solution

The fourth proportional to 120,605.53, 166,445.85 and 66,907.85 is: 92,338.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,605.53 : 166,445.85 = 66,907.85 : x
  2. Step 2: Convert to fraction form
    120,605.53/166,445.85 = 66,907.85/x
  3. Step 3: Cross multiply
    120,605.53x = 166,445.85 × 66,907.85
  4. Step 4: Simplify right side
    120,605.53x = 11,136,533,964.92
  5. Step 5: Solve for x
    x = 11,136,533,964.92/120,605.53
  6. Step 6: Final answer
    x = 92,338.50

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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.