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Finding the Fourth Proportional to 169,643.95, 234,004.47 and 121,961.27

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Solution

The fourth proportional to 169,643.95, 234,004.47 and 121,961.27 is: 168,231.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,643.95 : 234,004.47 = 121,961.27 : x
  2. Step 2: Convert to fraction form
    169,643.95/234,004.47 = 121,961.27/x
  3. Step 3: Cross multiply
    169,643.95x = 234,004.47 × 121,961.27
  4. Step 4: Simplify right side
    169,643.95x = 28,539,482,346.88
  5. Step 5: Solve for x
    x = 28,539,482,346.88/169,643.95
  6. Step 6: Final answer
    x = 168,231.65

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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.