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Finding the Fourth Proportional to 223,695.81, 308,695.63 and 121,723.29

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Solution

The fourth proportional to 223,695.81, 308,695.63 and 121,723.29 is: 167,975.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,695.81 : 308,695.63 = 121,723.29 : x
  2. Step 2: Convert to fraction form
    223,695.81/308,695.63 = 121,723.29/x
  3. Step 3: Cross multiply
    223,695.81x = 308,695.63 × 121,723.29
  4. Step 4: Simplify right side
    223,695.81x = 37,575,447,692.22
  5. Step 5: Solve for x
    x = 37,575,447,692.22/223,695.81
  6. Step 6: Final answer
    x = 167,975.64

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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.