Home / 138,922.30-208,383.45-133,090.30

Finding the Fourth Proportional to 138,922.30, 208,383.45 and 133,090.30

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Solution

The fourth proportional to 138,922.30, 208,383.45 and 133,090.30 is: 199,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,922.30 : 208,383.45 = 133,090.30 : x
  2. Step 2: Convert to fraction form
    138,922.30/208,383.45 = 133,090.30/x
  3. Step 3: Cross multiply
    138,922.30x = 208,383.45 × 133,090.30
  4. Step 4: Simplify right side
    138,922.30x = 27,733,815,875.54
  5. Step 5: Solve for x
    x = 27,733,815,875.54/138,922.30
  6. Step 6: Final answer
    x = 199,635.45

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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.