Home / 157,198.24-216,961.76-100,607.68

Finding the Fourth Proportional to 157,198.24, 216,961.76 and 100,607.68

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Solution

The fourth proportional to 157,198.24, 216,961.76 and 100,607.68 is: 138,856.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,198.24 : 216,961.76 = 100,607.68 : x
  2. Step 2: Convert to fraction form
    157,198.24/216,961.76 = 100,607.68/x
  3. Step 3: Cross multiply
    157,198.24x = 216,961.76 × 100,607.68
  4. Step 4: Simplify right side
    157,198.24x = 21,828,019,322.32
  5. Step 5: Solve for x
    x = 21,828,019,322.32/157,198.24
  6. Step 6: Final answer
    x = 138,856.64

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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.