Home / 128,934.24-177,926.42-71,570.22

Finding the Fourth Proportional to 128,934.24, 177,926.42 and 71,570.22

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Solution

The fourth proportional to 128,934.24, 177,926.42 and 71,570.22 is: 98,765.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,934.24 : 177,926.42 = 71,570.22 : x
  2. Step 2: Convert to fraction form
    128,934.24/177,926.42 = 71,570.22/x
  3. Step 3: Cross multiply
    128,934.24x = 177,926.42 × 71,570.22
  4. Step 4: Simplify right side
    128,934.24x = 12,734,233,023.21
  5. Step 5: Solve for x
    x = 12,734,233,023.21/128,934.24
  6. Step 6: Final answer
    x = 98,765.33

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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.