Home / 157,742.52-217,709.68-100,321.98

Finding the Fourth Proportional to 157,742.52, 217,709.68 and 100,321.98

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Solution

The fourth proportional to 157,742.52, 217,709.68 and 100,321.98 is: 138,460.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,742.52 : 217,709.68 = 100,321.98 : x
  2. Step 2: Convert to fraction form
    157,742.52/217,709.68 = 100,321.98/x
  3. Step 3: Cross multiply
    157,742.52x = 217,709.68 × 100,321.98
  4. Step 4: Simplify right side
    157,742.52x = 21,841,066,162.77
  5. Step 5: Solve for x
    x = 21,841,066,162.77/157,742.52
  6. Step 6: Final answer
    x = 138,460.23

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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.