Home / 157,742.36-217,709.46-100,321.82

Finding the Fourth Proportional to 157,742.36, 217,709.46 and 100,321.82

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Solution

The fourth proportional to 157,742.36, 217,709.46 and 100,321.82 is: 138,460.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,742.36 : 217,709.46 = 100,321.82 : x
  2. Step 2: Convert to fraction form
    157,742.36/217,709.46 = 100,321.82/x
  3. Step 3: Cross multiply
    157,742.36x = 217,709.46 × 100,321.82
  4. Step 4: Simplify right side
    157,742.36x = 21,841,009,258.42
  5. Step 5: Solve for x
    x = 21,841,009,258.42/157,742.36
  6. Step 6: Final answer
    x = 138,460.01

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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.