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Finding the Fourth Proportional to 223,079.16, 307,849.48 and 121,104.56

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Solution

The fourth proportional to 223,079.16, 307,849.48 and 121,104.56 is: 167,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,079.16 : 307,849.48 = 121,104.56 : x
  2. Step 2: Convert to fraction form
    223,079.16/307,849.48 = 121,104.56/x
  3. Step 3: Cross multiply
    223,079.16x = 307,849.48 × 121,104.56
  4. Step 4: Simplify right side
    223,079.16x = 37,281,975,821.63
  5. Step 5: Solve for x
    x = 37,281,975,821.63/223,079.16
  6. Step 6: Final answer
    x = 167,124.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.