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Finding the Fourth Proportional to 119,638.35, 165,108.17 and 65,923.30

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Solution

The fourth proportional to 119,638.35, 165,108.17 and 65,923.30 is: 90,978.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,638.35 : 165,108.17 = 65,923.30 : x
  2. Step 2: Convert to fraction form
    119,638.35/165,108.17 = 65,923.30/x
  3. Step 3: Cross multiply
    119,638.35x = 165,108.17 × 65,923.30
  4. Step 4: Simplify right side
    119,638.35x = 10,884,475,794.55
  5. Step 5: Solve for x
    x = 10,884,475,794.55/119,638.35
  6. Step 6: Final answer
    x = 90,978.15

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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.