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Finding the Fourth Proportional to 165,487, 228,372.06 and 90,036.04

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Solution

The fourth proportional to 165,487, 228,372.06 and 90,036.04 is: 124,249.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,487 : 228,372.06 = 90,036.04 : x
  2. Step 2: Convert to fraction form
    165,487/228,372.06 = 90,036.04/x
  3. Step 3: Cross multiply
    165,487x = 228,372.06 × 90,036.04
  4. Step 4: Simplify right side
    165,487x = 20,561,715,929.04
  5. Step 5: Solve for x
    x = 20,561,715,929.04/165,487
  6. Step 6: Final answer
    x = 124,249.74

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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.