Home / 99,854,443.20-149,613,703.20-85,409,745.60

Finding the Fourth Proportional to 99,854,443.20, 149,613,703.20 and 85,409,745.60

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Solution

The fourth proportional to 99,854,443.20, 149,613,703.20 and 85,409,745.60 is: 127,970,953.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,854,443.20 : 149,613,703.20 = 85,409,745.60 : x
  2. Step 2: Convert to fraction form
    99,854,443.20/149,613,703.20 = 85,409,745.60/x
  3. Step 3: Cross multiply
    99,854,443.20x = 149,613,703.20 × 85,409,745.60
  4. Step 4: Simplify right side
    99,854,443.20x = 12,778,468,328,585,904
  5. Step 5: Solve for x
    x = 12,778,468,328,585,904/99,854,443.20
  6. Step 6: Final answer
    x = 127,970,953.71

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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.