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Finding the Fourth Proportional to 223,829.76, 308,901.09 and 125,720.94

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Solution

The fourth proportional to 223,829.76, 308,901.09 and 125,720.94 is: 173,503.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,829.76 : 308,901.09 = 125,720.94 : x
  2. Step 2: Convert to fraction form
    223,829.76/308,901.09 = 125,720.94/x
  3. Step 3: Cross multiply
    223,829.76x = 308,901.09 × 125,720.94
  4. Step 4: Simplify right side
    223,829.76x = 38,835,337,031.66
  5. Step 5: Solve for x
    x = 38,835,337,031.66/223,829.76
  6. Step 6: Final answer
    x = 173,503.90

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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.