Home / 215,963.74-297,835.68-135,399.52

Finding the Fourth Proportional to 215,963.74, 297,835.68 and 135,399.52

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Solution

The fourth proportional to 215,963.74, 297,835.68 and 135,399.52 is: 186,729.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,963.74 : 297,835.68 = 135,399.52 : x
  2. Step 2: Convert to fraction form
    215,963.74/297,835.68 = 135,399.52/x
  3. Step 3: Cross multiply
    215,963.74x = 297,835.68 × 135,399.52
  4. Step 4: Simplify right side
    215,963.74x = 40,326,808,110.87
  5. Step 5: Solve for x
    x = 40,326,808,110.87/215,963.74
  6. Step 6: Final answer
    x = 186,729.53

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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.