Home / 123,507.45-170,441.01-66,918.87

Finding the Fourth Proportional to 123,507.45, 170,441.01 and 66,918.87

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Solution

The fourth proportional to 123,507.45, 170,441.01 and 66,918.87 is: 92,348.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,507.45 : 170,441.01 = 66,918.87 : x
  2. Step 2: Convert to fraction form
    123,507.45/170,441.01 = 66,918.87/x
  3. Step 3: Cross multiply
    123,507.45x = 170,441.01 × 66,918.87
  4. Step 4: Simplify right side
    123,507.45x = 11,405,719,790.86
  5. Step 5: Solve for x
    x = 11,405,719,790.86/123,507.45
  6. Step 6: Final answer
    x = 92,348.44

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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.