Home / 215,835.42-297,882.18-123,990.60

Finding the Fourth Proportional to 215,835.42, 297,882.18 and 123,990.60

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Solution

The fourth proportional to 215,835.42, 297,882.18 and 123,990.60 is: 171,123.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,835.42 : 297,882.18 = 123,990.60 : x
  2. Step 2: Convert to fraction form
    215,835.42/297,882.18 = 123,990.60/x
  3. Step 3: Cross multiply
    215,835.42x = 297,882.18 × 123,990.60
  4. Step 4: Simplify right side
    215,835.42x = 36,934,590,227.51
  5. Step 5: Solve for x
    x = 36,934,590,227.51/215,835.42
  6. Step 6: Final answer
    x = 171,123.86

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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.