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Finding the Fourth Proportional to 223,707.70, 308,720.33 and 121,737.45

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Solution

The fourth proportional to 223,707.70, 308,720.33 and 121,737.45 is: 167,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,707.70 : 308,720.33 = 121,737.45 : x
  2. Step 2: Convert to fraction form
    223,707.70/308,720.33 = 121,737.45/x
  3. Step 3: Cross multiply
    223,707.70x = 308,720.33 × 121,737.45
  4. Step 4: Simplify right side
    223,707.70x = 37,582,825,737.36
  5. Step 5: Solve for x
    x = 37,582,825,737.36/223,707.70
  6. Step 6: Final answer
    x = 167,999.70

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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.