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Finding the Fourth Proportional to 144,710.60, 217,065.90 and 138,566.60

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Solution

The fourth proportional to 144,710.60, 217,065.90 and 138,566.60 is: 207,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,710.60 : 217,065.90 = 138,566.60 : x
  2. Step 2: Convert to fraction form
    144,710.60/217,065.90 = 138,566.60/x
  3. Step 3: Cross multiply
    144,710.60x = 217,065.90 × 138,566.60
  4. Step 4: Simplify right side
    144,710.60x = 30,078,083,738.94
  5. Step 5: Solve for x
    x = 30,078,083,738.94/144,710.60
  6. Step 6: Final answer
    x = 207,849.90

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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.