Home / 143,285.41-197,726.64-79,621.84

Finding the Fourth Proportional to 143,285.41, 197,726.64 and 79,621.84

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Solution

The fourth proportional to 143,285.41, 197,726.64 and 79,621.84 is: 109,874.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,285.41 : 197,726.64 = 79,621.84 : x
  2. Step 2: Convert to fraction form
    143,285.41/197,726.64 = 79,621.84/x
  3. Step 3: Cross multiply
    143,285.41x = 197,726.64 × 79,621.84
  4. Step 4: Simplify right side
    143,285.41x = 15,743,358,893.82
  5. Step 5: Solve for x
    x = 15,743,358,893.82/143,285.41
  6. Step 6: Final answer
    x = 109,874.12

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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.