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Finding the Fourth Proportional to 223,720.70, 308,734.47 and 123,118.70

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Solution

The fourth proportional to 223,720.70, 308,734.47 and 123,118.70 is: 169,903.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,720.70 : 308,734.47 = 123,118.70 : x
  2. Step 2: Convert to fraction form
    223,720.70/308,734.47 = 123,118.70/x
  3. Step 3: Cross multiply
    223,720.70x = 308,734.47 × 123,118.70
  4. Step 4: Simplify right side
    223,720.70x = 38,010,985,047.92
  5. Step 5: Solve for x
    x = 38,010,985,047.92/223,720.70
  6. Step 6: Final answer
    x = 169,903.75

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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.