Home / 123,500.20-170,430.42-66,911.56

Finding the Fourth Proportional to 123,500.20, 170,430.42 and 66,911.56

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Solution

The fourth proportional to 123,500.20, 170,430.42 and 66,911.56 is: 92,338.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,500.20 : 170,430.42 = 66,911.56 : x
  2. Step 2: Convert to fraction form
    123,500.20/170,430.42 = 66,911.56/x
  3. Step 3: Cross multiply
    123,500.20x = 170,430.42 × 66,911.56
  4. Step 4: Simplify right side
    123,500.20x = 11,403,765,273.66
  5. Step 5: Solve for x
    x = 11,403,765,273.66/123,500.20
  6. Step 6: Final answer
    x = 92,338.03

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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.