Home / 120,221,997.60-165,906,676.80-65,217,856.80

Finding the Fourth Proportional to 120,221,997.60, 165,906,676.80 and 65,217,856.80

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Solution

The fourth proportional to 120,221,997.60, 165,906,676.80 and 65,217,856.80 is: 90,000,816.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,221,997.60 : 165,906,676.80 = 65,217,856.80 : x
  2. Step 2: Convert to fraction form
    120,221,997.60/165,906,676.80 = 65,217,856.80/x
  3. Step 3: Cross multiply
    120,221,997.60x = 165,906,676.80 × 65,217,856.80
  4. Step 4: Simplify right side
    120,221,997.60x = 10,820,077,889,706,282
  5. Step 5: Solve for x
    x = 10,820,077,889,706,282/120,221,997.60
  6. Step 6: Final answer
    x = 90,000,816.04

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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.