Home / 120,530.28-166,314.27-66,815.25

Finding the Fourth Proportional to 120,530.28, 166,314.27 and 66,815.25

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Solution

The fourth proportional to 120,530.28, 166,314.27 and 66,815.25 is: 92,195.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,530.28 : 166,314.27 = 66,815.25 : x
  2. Step 2: Convert to fraction form
    120,530.28/166,314.27 = 66,815.25/x
  3. Step 3: Cross multiply
    120,530.28x = 166,314.27 × 66,815.25
  4. Step 4: Simplify right side
    120,530.28x = 11,112,329,528.62
  5. Step 5: Solve for x
    x = 11,112,329,528.62/120,530.28
  6. Step 6: Final answer
    x = 92,195.33

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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.