Home / 215,629.23-297,568.71-120,139.32

Finding the Fourth Proportional to 215,629.23, 297,568.71 and 120,139.32

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Solution

The fourth proportional to 215,629.23, 297,568.71 and 120,139.32 is: 165,792.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,629.23 : 297,568.71 = 120,139.32 : x
  2. Step 2: Convert to fraction form
    215,629.23/297,568.71 = 120,139.32/x
  3. Step 3: Cross multiply
    215,629.23x = 297,568.71 × 120,139.32
  4. Step 4: Simplify right side
    215,629.23x = 35,749,702,472.68
  5. Step 5: Solve for x
    x = 35,749,702,472.68/215,629.23
  6. Step 6: Final answer
    x = 165,792.47

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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.