Home / 132,887,945.40-199,331,918.10-81,603,670.20

Finding the Fourth Proportional to 132,887,945.40, 199,331,918.10 and 81,603,670.20

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Solution

The fourth proportional to 132,887,945.40, 199,331,918.10 and 81,603,670.20 is: 122,405,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,887,945.40 : 199,331,918.10 = 81,603,670.20 : x
  2. Step 2: Convert to fraction form
    132,887,945.40/199,331,918.10 = 81,603,670.20/x
  3. Step 3: Cross multiply
    132,887,945.40x = 199,331,918.10 × 81,603,670.20
  4. Step 4: Simplify right side
    132,887,945.40x = 16,266,216,104,965,810
  5. Step 5: Solve for x
    x = 16,266,216,104,965,810/132,887,945.40
  6. Step 6: Final answer
    x = 122,405,505.30

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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.