Home / 121,005.20-166,986.28-67,295.12

Finding the Fourth Proportional to 121,005.20, 166,986.28 and 67,295.12

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Solution

The fourth proportional to 121,005.20, 166,986.28 and 67,295.12 is: 92,866.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,005.20 : 166,986.28 = 67,295.12 : x
  2. Step 2: Convert to fraction form
    121,005.20/166,986.28 = 67,295.12/x
  3. Step 3: Cross multiply
    121,005.20x = 166,986.28 × 67,295.12
  4. Step 4: Simplify right side
    121,005.20x = 11,237,361,750.95
  5. Step 5: Solve for x
    x = 11,237,361,750.95/121,005.20
  6. Step 6: Final answer
    x = 92,866.77

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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.