Home / 215,868.16-323,724.48-91,218.88

Finding the Fourth Proportional to 215,868.16, 323,724.48 and 91,218.88

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Solution

The fourth proportional to 215,868.16, 323,724.48 and 91,218.88 is: 136,795.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,868.16 : 323,724.48 = 91,218.88 : x
  2. Step 2: Convert to fraction form
    215,868.16/323,724.48 = 91,218.88/x
  3. Step 3: Cross multiply
    215,868.16x = 323,724.48 × 91,218.88
  4. Step 4: Simplify right side
    215,868.16x = 29,529,784,494.18
  5. Step 5: Solve for x
    x = 29,529,784,494.18/215,868.16
  6. Step 6: Final answer
    x = 136,795.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.