Home / 120,005.07-165,603.85-66,281.41

Finding the Fourth Proportional to 120,005.07, 165,603.85 and 66,281.41

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Solution

The fourth proportional to 120,005.07, 165,603.85 and 66,281.41 is: 91,466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,005.07 : 165,603.85 = 66,281.41 : x
  2. Step 2: Convert to fraction form
    120,005.07/165,603.85 = 66,281.41/x
  3. Step 3: Cross multiply
    120,005.07x = 165,603.85 × 66,281.41
  4. Step 4: Simplify right side
    120,005.07x = 10,976,456,679.43
  5. Step 5: Solve for x
    x = 10,976,456,679.43/120,005.07
  6. Step 6: Final answer
    x = 91,466.61

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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.