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Finding the Fourth Proportional to 144,940.80, 217,411.20 and 91,796.70

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Solution

The fourth proportional to 144,940.80, 217,411.20 and 91,796.70 is: 137,695.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,940.80 : 217,411.20 = 91,796.70 : x
  2. Step 2: Convert to fraction form
    144,940.80/217,411.20 = 91,796.70/x
  3. Step 3: Cross multiply
    144,940.80x = 217,411.20 × 91,796.70
  4. Step 4: Simplify right side
    144,940.80x = 19,957,630,703.04
  5. Step 5: Solve for x
    x = 19,957,630,703.04/144,940.80
  6. Step 6: Final answer
    x = 137,695.05

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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.