Home / 157,913.46-217,942.79-100,534.45

Finding the Fourth Proportional to 157,913.46, 217,942.79 and 100,534.45

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Solution

The fourth proportional to 157,913.46, 217,942.79 and 100,534.45 is: 138,751.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,913.46 : 217,942.79 = 100,534.45 : x
  2. Step 2: Convert to fraction form
    157,913.46/217,942.79 = 100,534.45/x
  3. Step 3: Cross multiply
    157,913.46x = 217,942.79 × 100,534.45
  4. Step 4: Simplify right side
    157,913.46x = 21,910,758,524.12
  5. Step 5: Solve for x
    x = 21,910,758,524.12/157,913.46
  6. Step 6: Final answer
    x = 138,751.69

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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.