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Finding the Fourth Proportional to 121,643.93, 167,947.61 and 108,875.00

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Solution

The fourth proportional to 121,643.93, 167,947.61 and 108,875.00 is: 150,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,643.93 : 167,947.61 = 108,875.00 : x
  2. Step 2: Convert to fraction form
    121,643.93/167,947.61 = 108,875.00/x
  3. Step 3: Cross multiply
    121,643.93x = 167,947.61 × 108,875.00
  4. Step 4: Simplify right side
    121,643.93x = 18,285,294,654.64
  5. Step 5: Solve for x
    x = 18,285,294,654.64/121,643.93
  6. Step 6: Final answer
    x = 150,318.19

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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.