Home / 120,200.12-165,915.60-84,399.08

Finding the Fourth Proportional to 120,200.12, 165,915.60 and 84,399.08

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Solution

The fourth proportional to 120,200.12, 165,915.60 and 84,399.08 is: 116,498.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,200.12 : 165,915.60 = 84,399.08 : x
  2. Step 2: Convert to fraction form
    120,200.12/165,915.60 = 84,399.08/x
  3. Step 3: Cross multiply
    120,200.12x = 165,915.60 × 84,399.08
  4. Step 4: Simplify right side
    120,200.12x = 14,003,123,997.65
  5. Step 5: Solve for x
    x = 14,003,123,997.65/120,200.12
  6. Step 6: Final answer
    x = 116,498.42

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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.