Home / 219,731.14-303,117.69-139,022.74

Finding the Fourth Proportional to 219,731.14, 303,117.69 and 139,022.74

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Solution

The fourth proportional to 219,731.14, 303,117.69 and 139,022.74 is: 191,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,731.14 : 303,117.69 = 139,022.74 : x
  2. Step 2: Convert to fraction form
    219,731.14/303,117.69 = 139,022.74/x
  3. Step 3: Cross multiply
    219,731.14x = 303,117.69 × 139,022.74
  4. Step 4: Simplify right side
    219,731.14x = 42,140,251,806.27
  5. Step 5: Solve for x
    x = 42,140,251,806.27/219,731.14
  6. Step 6: Final answer
    x = 191,780.97

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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.