Home / 120,509.56-166,313.15-66,811.42

Finding the Fourth Proportional to 120,509.56, 166,313.15 and 66,811.42

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Solution

The fourth proportional to 120,509.56, 166,313.15 and 66,811.42 is: 92,205.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,509.56 : 166,313.15 = 66,811.42 : x
  2. Step 2: Convert to fraction form
    120,509.56/166,313.15 = 66,811.42/x
  3. Step 3: Cross multiply
    120,509.56x = 166,313.15 × 66,811.42
  4. Step 4: Simplify right side
    120,509.56x = 11,111,617,716.17
  5. Step 5: Solve for x
    x = 11,111,617,716.17/120,509.56
  6. Step 6: Final answer
    x = 92,205.28

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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.