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Finding the Fourth Proportional to 165,881.52, 228,920.04 and 90,430.56

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Solution

The fourth proportional to 165,881.52, 228,920.04 and 90,430.56 is: 124,796.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,881.52 : 228,920.04 = 90,430.56 : x
  2. Step 2: Convert to fraction form
    165,881.52/228,920.04 = 90,430.56/x
  3. Step 3: Cross multiply
    165,881.52x = 228,920.04 × 90,430.56
  4. Step 4: Simplify right side
    165,881.52x = 20,701,367,412.42
  5. Step 5: Solve for x
    x = 20,701,367,412.42/165,881.52
  6. Step 6: Final answer
    x = 124,796.10

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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.