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Finding the Fourth Proportional to 165,878.78, 228,905.93 and 93,279.61

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Solution

The fourth proportional to 165,878.78, 228,905.93 and 93,279.61 is: 128,722.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,878.78 : 228,905.93 = 93,279.61 : x
  2. Step 2: Convert to fraction form
    165,878.78/228,905.93 = 93,279.61/x
  3. Step 3: Cross multiply
    165,878.78x = 228,905.93 × 93,279.61
  4. Step 4: Simplify right side
    165,878.78x = 21,352,254,266.16
  5. Step 5: Solve for x
    x = 21,352,254,266.16/165,878.78
  6. Step 6: Final answer
    x = 128,722.04

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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.