Home / 215,874.81-297,908.54-120,387.55

Finding the Fourth Proportional to 215,874.81, 297,908.54 and 120,387.55

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Solution

The fourth proportional to 215,874.81, 297,908.54 and 120,387.55 is: 166,135.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,874.81 : 297,908.54 = 120,387.55 : x
  2. Step 2: Convert to fraction form
    215,874.81/297,908.54 = 120,387.55/x
  3. Step 3: Cross multiply
    215,874.81x = 297,908.54 × 120,387.55
  4. Step 4: Simplify right side
    215,874.81x = 35,864,479,254.68
  5. Step 5: Solve for x
    x = 35,864,479,254.68/215,874.81
  6. Step 6: Final answer
    x = 166,135.55

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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.