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Finding the Fourth Proportional to 165,496.78, 228,386.01 and 90,045.28

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Solution

The fourth proportional to 165,496.78, 228,386.01 and 90,045.28 is: 124,262.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,496.78 : 228,386.01 = 90,045.28 : x
  2. Step 2: Convert to fraction form
    165,496.78/228,386.01 = 90,045.28/x
  3. Step 3: Cross multiply
    165,496.78x = 228,386.01 × 90,045.28
  4. Step 4: Simplify right side
    165,496.78x = 20,565,082,218.53
  5. Step 5: Solve for x
    x = 20,565,082,218.53/165,496.78
  6. Step 6: Final answer
    x = 124,262.73

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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.