Home / 157,508.48-217,265.06-100,821.44

Finding the Fourth Proportional to 157,508.48, 217,265.06 and 100,821.44

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Solution

The fourth proportional to 157,508.48, 217,265.06 and 100,821.44 is: 139,071.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,508.48 : 217,265.06 = 100,821.44 : x
  2. Step 2: Convert to fraction form
    157,508.48/217,265.06 = 100,821.44/x
  3. Step 3: Cross multiply
    157,508.48x = 217,265.06 × 100,821.44
  4. Step 4: Simplify right side
    157,508.48x = 21,904,975,124.56
  5. Step 5: Solve for x
    x = 21,904,975,124.56/157,508.48
  6. Step 6: Final answer
    x = 139,071.72

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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.