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Finding the Fourth Proportional to 169,878.20, 254,848.05 and 69,982.88

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Solution

The fourth proportional to 169,878.20, 254,848.05 and 69,982.88 is: 104,986.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,878.20 : 254,848.05 = 69,982.88 : x
  2. Step 2: Convert to fraction form
    169,878.20/254,848.05 = 69,982.88/x
  3. Step 3: Cross multiply
    169,878.20x = 254,848.05 × 69,982.88
  4. Step 4: Simplify right side
    169,878.20x = 17,834,999,227.14
  5. Step 5: Solve for x
    x = 17,834,999,227.14/169,878.20
  6. Step 6: Final answer
    x = 104,986.98

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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.