Home / 120,018.00-165,622.88-66,305.28

Finding the Fourth Proportional to 120,018.00, 165,622.88 and 66,305.28

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Solution

The fourth proportional to 120,018.00, 165,622.88 and 66,305.28 is: 91,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,018.00 : 165,622.88 = 66,305.28 : x
  2. Step 2: Convert to fraction form
    120,018.00/165,622.88 = 66,305.28/x
  3. Step 3: Cross multiply
    120,018.00x = 165,622.88 × 66,305.28
  4. Step 4: Simplify right side
    120,018.00x = 10,981,671,846.69
  5. Step 5: Solve for x
    x = 10,981,671,846.69/120,018.00
  6. Step 6: Final answer
    x = 91,500.20

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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.