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Finding the Fourth Proportional to 144,654.01, 216,981.05 and 69,760.19

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Solution

The fourth proportional to 144,654.01, 216,981.05 and 69,760.19 is: 104,640.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,654.01 : 216,981.05 = 69,760.19 : x
  2. Step 2: Convert to fraction form
    144,654.01/216,981.05 = 69,760.19/x
  3. Step 3: Cross multiply
    144,654.01x = 216,981.05 × 69,760.19
  4. Step 4: Simplify right side
    144,654.01x = 15,136,639,468.05
  5. Step 5: Solve for x
    x = 15,136,639,468.05/144,654.01
  6. Step 6: Final answer
    x = 104,640.31

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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.