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Finding the Fourth Proportional to 223,101.43, 307,871.29 and 121,124.58

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Solution

The fourth proportional to 223,101.43, 307,871.29 and 121,124.58 is: 167,147.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,101.43 : 307,871.29 = 121,124.58 : x
  2. Step 2: Convert to fraction form
    223,101.43/307,871.29 = 121,124.58/x
  3. Step 3: Cross multiply
    223,101.43x = 307,871.29 × 121,124.58
  4. Step 4: Simplify right side
    223,101.43x = 37,290,780,695.31
  5. Step 5: Solve for x
    x = 37,290,780,695.31/223,101.43
  6. Step 6: Final answer
    x = 167,147.21

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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.