Home / 202,257.79-278,997.90-129,634.81

Finding the Fourth Proportional to 202,257.79, 278,997.90 and 129,634.81

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Solution

The fourth proportional to 202,257.79, 278,997.90 and 129,634.81 is: 178,820.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,257.79 : 278,997.90 = 129,634.81 : x
  2. Step 2: Convert to fraction form
    202,257.79/278,997.90 = 129,634.81/x
  3. Step 3: Cross multiply
    202,257.79x = 278,997.90 × 129,634.81
  4. Step 4: Simplify right side
    202,257.79x = 36,167,840,871.83
  5. Step 5: Solve for x
    x = 36,167,840,871.83/202,257.79
  6. Step 6: Final answer
    x = 178,820.51

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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.