Home / 120,045.36-165,665.97-66,333.87

Finding the Fourth Proportional to 120,045.36, 165,665.97 and 66,333.87

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Solution

The fourth proportional to 120,045.36, 165,665.97 and 66,333.87 is: 91,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,045.36 : 165,665.97 = 66,333.87 : x
  2. Step 2: Convert to fraction form
    120,045.36/165,665.97 = 66,333.87/x
  3. Step 3: Cross multiply
    120,045.36x = 165,665.97 × 66,333.87
  4. Step 4: Simplify right side
    120,045.36x = 10,989,264,917.40
  5. Step 5: Solve for x
    x = 10,989,264,917.40/120,045.36
  6. Step 6: Final answer
    x = 91,542.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.