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Finding the Fourth Proportional to 170,111.79, 254,876.09 and 120,102.39

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Solution

The fourth proportional to 170,111.79, 254,876.09 and 120,102.39 is: 179,947.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,111.79 : 254,876.09 = 120,102.39 : x
  2. Step 2: Convert to fraction form
    170,111.79/254,876.09 = 120,102.39/x
  3. Step 3: Cross multiply
    170,111.79x = 254,876.09 × 120,102.39
  4. Step 4: Simplify right side
    170,111.79x = 30,611,226,962.34
  5. Step 5: Solve for x
    x = 30,611,226,962.34/170,111.79
  6. Step 6: Final answer
    x = 179,947.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.