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Finding the Fourth Proportional to 144,502.70, 217,272.45 and 121,693.10

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Solution

The fourth proportional to 144,502.70, 217,272.45 and 121,693.10 is: 182,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,502.70 : 217,272.45 = 121,693.10 : x
  2. Step 2: Convert to fraction form
    144,502.70/217,272.45 = 121,693.10/x
  3. Step 3: Cross multiply
    144,502.70x = 217,272.45 × 121,693.10
  4. Step 4: Simplify right side
    144,502.70x = 26,440,557,985.10
  5. Step 5: Solve for x
    x = 26,440,557,985.10/144,502.70
  6. Step 6: Final answer
    x = 182,976.22

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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.