Home / 120,113.34-165,755.19-66,395.76

Finding the Fourth Proportional to 120,113.34, 165,755.19 and 66,395.76

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Solution

The fourth proportional to 120,113.34, 165,755.19 and 66,395.76 is: 91,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,113.34 : 165,755.19 = 66,395.76 : x
  2. Step 2: Convert to fraction form
    120,113.34/165,755.19 = 66,395.76/x
  3. Step 3: Cross multiply
    120,113.34x = 165,755.19 × 66,395.76
  4. Step 4: Simplify right side
    120,113.34x = 11,005,441,813.99
  5. Step 5: Solve for x
    x = 11,005,441,813.99/120,113.34
  6. Step 6: Final answer
    x = 91,625.47

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1.5x scale

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.