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Finding the Fourth Proportional to 144,960.80, 217,441.20 and 97,721.60

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Solution

The fourth proportional to 144,960.80, 217,441.20 and 97,721.60 is: 146,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,960.80 : 217,441.20 = 97,721.60 : x
  2. Step 2: Convert to fraction form
    144,960.80/217,441.20 = 97,721.60/x
  3. Step 3: Cross multiply
    144,960.80x = 217,441.20 × 97,721.60
  4. Step 4: Simplify right side
    144,960.80x = 21,248,701,969.92
  5. Step 5: Solve for x
    x = 21,248,701,969.92/144,960.80
  6. Step 6: Final answer
    x = 146,582.40

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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.