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Finding the Fourth Proportional to 169,983.84, 254,742.48 and 86,702.88

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Solution

The fourth proportional to 169,983.84, 254,742.48 and 86,702.88 is: 129,935.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,983.84 : 254,742.48 = 86,702.88 : x
  2. Step 2: Convert to fraction form
    169,983.84/254,742.48 = 86,702.88/x
  3. Step 3: Cross multiply
    169,983.84x = 254,742.48 × 86,702.88
  4. Step 4: Simplify right side
    169,983.84x = 22,086,906,674.34
  5. Step 5: Solve for x
    x = 22,086,906,674.34/169,983.84
  6. Step 6: Final answer
    x = 129,935.33

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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.