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Finding the Fourth Proportional to 202,435.74, 279,099.27 and 138,659.58

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Solution

The fourth proportional to 202,435.74, 279,099.27 and 138,659.58 is: 191,170.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,435.74 : 279,099.27 = 138,659.58 : x
  2. Step 2: Convert to fraction form
    202,435.74/279,099.27 = 138,659.58/x
  3. Step 3: Cross multiply
    202,435.74x = 279,099.27 × 138,659.58
  4. Step 4: Simplify right side
    202,435.74x = 38,699,787,556.51
  5. Step 5: Solve for x
    x = 38,699,787,556.51/202,435.74
  6. Step 6: Final answer
    x = 191,170.73

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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.