Home / 85,613,183.80-128,207,199.30-68,607,071.80

Finding the Fourth Proportional to 85,613,183.80, 128,207,199.30 and 68,607,071.80

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Solution

The fourth proportional to 85,613,183.80, 128,207,199.30 and 68,607,071.80 is: 102,740,257.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,613,183.80 : 128,207,199.30 = 68,607,071.80 : x
  2. Step 2: Convert to fraction form
    85,613,183.80/128,207,199.30 = 68,607,071.80/x
  3. Step 3: Cross multiply
    85,613,183.80x = 128,207,199.30 × 68,607,071.80
  4. Step 4: Simplify right side
    85,613,183.80x = 8,795,920,527,652,009
  5. Step 5: Solve for x
    x = 8,795,920,527,652,009/85,613,183.80
  6. Step 6: Final answer
    x = 102,740,257.25

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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.