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Finding the Fourth Proportional to 144,693.12, 217,101.95 and 69,869.27

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Solution

The fourth proportional to 144,693.12, 217,101.95 and 69,869.27 is: 104,833.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,693.12 : 217,101.95 = 69,869.27 : x
  2. Step 2: Convert to fraction form
    144,693.12/217,101.95 = 69,869.27/x
  3. Step 3: Cross multiply
    144,693.12x = 217,101.95 × 69,869.27
  4. Step 4: Simplify right side
    144,693.12x = 15,168,754,470.91
  5. Step 5: Solve for x
    x = 15,168,754,470.91/144,693.12
  6. Step 6: Final answer
    x = 104,833.97

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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.