Home / 120,335.95-166,064.91-66,621.79

Finding the Fourth Proportional to 120,335.95, 166,064.91 and 66,621.79

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Solution

The fourth proportional to 120,335.95, 166,064.91 and 66,621.79 is: 91,938.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,335.95 : 166,064.91 = 66,621.79 : x
  2. Step 2: Convert to fraction form
    120,335.95/166,064.91 = 66,621.79/x
  3. Step 3: Cross multiply
    120,335.95x = 166,064.91 × 66,621.79
  4. Step 4: Simplify right side
    120,335.95x = 11,063,541,227.28
  5. Step 5: Solve for x
    x = 11,063,541,227.28/120,335.95
  6. Step 6: Final answer
    x = 91,938.79

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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.