Home / 87,353,911.20-131,030,866.80-86,220,170.40

Finding the Fourth Proportional to 87,353,911.20, 131,030,866.80 and 86,220,170.40

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Solution

The fourth proportional to 87,353,911.20, 131,030,866.80 and 86,220,170.40 is: 129,330,255.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,353,911.20 : 131,030,866.80 = 86,220,170.40 : x
  2. Step 2: Convert to fraction form
    87,353,911.20/131,030,866.80 = 86,220,170.40/x
  3. Step 3: Cross multiply
    87,353,911.20x = 131,030,866.80 × 86,220,170.40
  4. Step 4: Simplify right side
    87,353,911.20x = 11,297,503,663,155,704
  5. Step 5: Solve for x
    x = 11,297,503,663,155,704/87,353,911.20
  6. Step 6: Final answer
    x = 129,330,255.60

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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.