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Finding the Fourth Proportional to 121,660.80, 167,795.52 and 73,912.80

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Solution

The fourth proportional to 121,660.80, 167,795.52 and 73,912.80 is: 101,941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,660.80 : 167,795.52 = 73,912.80 : x
  2. Step 2: Convert to fraction form
    121,660.80/167,795.52 = 73,912.80/x
  3. Step 3: Cross multiply
    121,660.80x = 167,795.52 × 73,912.80
  4. Step 4: Simplify right side
    121,660.80x = 12,402,236,710.66
  5. Step 5: Solve for x
    x = 12,402,236,710.66/121,660.80
  6. Step 6: Final answer
    x = 101,941.11

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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.