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Finding the Fourth Proportional to 85,003,386.60, 119,231,489.40 and 85,003,386.60

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Solution

The fourth proportional to 85,003,386.60, 119,231,489.40 and 85,003,386.60 is: 119,231,489.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,003,386.60 : 119,231,489.40 = 85,003,386.60 : x
  2. Step 2: Convert to fraction form
    85,003,386.60/119,231,489.40 = 85,003,386.60/x
  3. Step 3: Cross multiply
    85,003,386.60x = 119,231,489.40 × 85,003,386.60
  4. Step 4: Simplify right side
    85,003,386.60x = 10,135,080,388,362,002
  5. Step 5: Solve for x
    x = 10,135,080,388,362,002/85,003,386.60
  6. Step 6: Final answer
    x = 119,231,489.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.