Home / 252,115.40-378,173.10-111,888.20

Finding the Fourth Proportional to 252,115.40, 378,173.10 and 111,888.20

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Solution

The fourth proportional to 252,115.40, 378,173.10 and 111,888.20 is: 167,832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,115.40 : 378,173.10 = 111,888.20 : x
  2. Step 2: Convert to fraction form
    252,115.40/378,173.10 = 111,888.20/x
  3. Step 3: Cross multiply
    252,115.40x = 378,173.10 × 111,888.20
  4. Step 4: Simplify right side
    252,115.40x = 42,313,107,447.42
  5. Step 5: Solve for x
    x = 42,313,107,447.42/252,115.40
  6. Step 6: Final answer
    x = 167,832.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.