Home / 123,729.42-170,745.66-67,141.20

Finding the Fourth Proportional to 123,729.42, 170,745.66 and 67,141.20

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Solution

The fourth proportional to 123,729.42, 170,745.66 and 67,141.20 is: 92,654.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,729.42 : 170,745.66 = 67,141.20 : x
  2. Step 2: Convert to fraction form
    123,729.42/170,745.66 = 67,141.20/x
  3. Step 3: Cross multiply
    123,729.42x = 170,745.66 × 67,141.20
  4. Step 4: Simplify right side
    123,729.42x = 11,464,068,507.19
  5. Step 5: Solve for x
    x = 11,464,068,507.19/123,729.42
  6. Step 6: Final answer
    x = 92,654.35

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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.