Home / 215,619.57-297,555.11-120,132.51

Finding the Fourth Proportional to 215,619.57, 297,555.11 and 120,132.51

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Solution

The fourth proportional to 215,619.57, 297,555.11 and 120,132.51 is: 165,782.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,619.57 : 297,555.11 = 120,132.51 : x
  2. Step 2: Convert to fraction form
    215,619.57/297,555.11 = 120,132.51/x
  3. Step 3: Cross multiply
    215,619.57x = 297,555.11 × 120,132.51
  4. Step 4: Simplify right side
    215,619.57x = 35,746,041,626.96
  5. Step 5: Solve for x
    x = 35,746,041,626.96/215,619.57
  6. Step 6: Final answer
    x = 165,782.92

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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.