Home / 89,143,652.40-133,715,478.60-81,207,466.80

Finding the Fourth Proportional to 89,143,652.40, 133,715,478.60 and 81,207,466.80

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Solution

The fourth proportional to 89,143,652.40, 133,715,478.60 and 81,207,466.80 is: 121,811,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,143,652.40 : 133,715,478.60 = 81,207,466.80 : x
  2. Step 2: Convert to fraction form
    89,143,652.40/133,715,478.60 = 81,207,466.80/x
  3. Step 3: Cross multiply
    89,143,652.40x = 133,715,478.60 × 81,207,466.80
  4. Step 4: Simplify right side
    89,143,652.40x = 10,858,695,289,055,610
  5. Step 5: Solve for x
    x = 10,858,695,289,055,610/89,143,652.40
  6. Step 6: Final answer
    x = 121,811,200.20

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Similar ratio
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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.