Home / 120,114.67-165,758.20-72,377.25

Finding the Fourth Proportional to 120,114.67, 165,758.20 and 72,377.25

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Solution

The fourth proportional to 120,114.67, 165,758.20 and 72,377.25 is: 99,880.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,114.67 : 165,758.20 = 72,377.25 : x
  2. Step 2: Convert to fraction form
    120,114.67/165,758.20 = 72,377.25/x
  3. Step 3: Cross multiply
    120,114.67x = 165,758.20 × 72,377.25
  4. Step 4: Simplify right side
    120,114.67x = 11,997,121,878.41
  5. Step 5: Solve for x
    x = 11,997,121,878.41/120,114.67
  6. Step 6: Final answer
    x = 99,880.57

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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.