Home / 252,628.08-378,981-84,090.60

Finding the Fourth Proportional to 252,628.08, 378,981 and 84,090.60

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Solution

The fourth proportional to 252,628.08, 378,981 and 84,090.60 is: 126,148.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,628.08 : 378,981 = 84,090.60 : x
  2. Step 2: Convert to fraction form
    252,628.08/378,981 = 84,090.60/x
  3. Step 3: Cross multiply
    252,628.08x = 378,981 × 84,090.60
  4. Step 4: Simplify right side
    252,628.08x = 31,868,739,678.60
  5. Step 5: Solve for x
    x = 31,868,739,678.60/252,628.08
  6. Step 6: Final answer
    x = 126,148.84

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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.