Home / 215,617.17-323,068.23-131,121.75

Finding the Fourth Proportional to 215,617.17, 323,068.23 and 131,121.75

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Solution

The fourth proportional to 215,617.17, 323,068.23 and 131,121.75 is: 196,465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,617.17 : 323,068.23 = 131,121.75 : x
  2. Step 2: Convert to fraction form
    215,617.17/323,068.23 = 131,121.75/x
  3. Step 3: Cross multiply
    215,617.17x = 323,068.23 × 131,121.75
  4. Step 4: Simplify right side
    215,617.17x = 42,361,272,898.51
  5. Step 5: Solve for x
    x = 42,361,272,898.51/215,617.17
  6. Step 6: Final answer
    x = 196,465.21

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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.