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Finding the Fourth Proportional to 120,635.55, 166,368.06 and 75,317.67

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Solution

The fourth proportional to 120,635.55, 166,368.06 and 75,317.67 is: 103,870.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,635.55 : 166,368.06 = 75,317.67 : x
  2. Step 2: Convert to fraction form
    120,635.55/166,368.06 = 75,317.67/x
  3. Step 3: Cross multiply
    120,635.55x = 166,368.06 × 75,317.67
  4. Step 4: Simplify right side
    120,635.55x = 12,530,454,641.62
  5. Step 5: Solve for x
    x = 12,530,454,641.62/120,635.55
  6. Step 6: Final answer
    x = 103,870.33

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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.