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Finding the Fourth Proportional to 165,486, 228,370.68 and 90,035.04

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Solution

The fourth proportional to 165,486, 228,370.68 and 90,035.04 is: 124,248.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,486 : 228,370.68 = 90,035.04 : x
  2. Step 2: Convert to fraction form
    165,486/228,370.68 = 90,035.04/x
  3. Step 3: Cross multiply
    165,486x = 228,370.68 × 90,035.04
  4. Step 4: Simplify right side
    165,486x = 20,561,363,308.63
  5. Step 5: Solve for x
    x = 20,561,363,308.63/165,486
  6. Step 6: Final answer
    x = 124,248.36

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1.5x scale

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.