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Finding the Fourth Proportional to 110,324.61, 165,486.90 and 77,109.55

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Solution

The fourth proportional to 110,324.61, 165,486.90 and 77,109.55 is: 115,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,324.61 : 165,486.90 = 77,109.55 : x
  2. Step 2: Convert to fraction form
    110,324.61/165,486.90 = 77,109.55/x
  3. Step 3: Cross multiply
    110,324.61x = 165,486.90 × 77,109.55
  4. Step 4: Simplify right side
    110,324.61x = 12,760,620,265.34
  5. Step 5: Solve for x
    x = 12,760,620,265.34/110,324.61
  6. Step 6: Final answer
    x = 115,664.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.