Home / 120,428.25-166,200.35-66,718.23

Finding the Fourth Proportional to 120,428.25, 166,200.35 and 66,718.23

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Solution

The fourth proportional to 120,428.25, 166,200.35 and 66,718.23 is: 92,076.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,428.25 : 166,200.35 = 66,718.23 : x
  2. Step 2: Convert to fraction form
    120,428.25/166,200.35 = 66,718.23/x
  3. Step 3: Cross multiply
    120,428.25x = 166,200.35 × 66,718.23
  4. Step 4: Simplify right side
    120,428.25x = 11,088,593,177.38
  5. Step 5: Solve for x
    x = 11,088,593,177.38/120,428.25
  6. Step 6: Final answer
    x = 92,076.35

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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.