Home / 143,319.84-197,772.24-79,653.76

Finding the Fourth Proportional to 143,319.84, 197,772.24 and 79,653.76

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Solution

The fourth proportional to 143,319.84, 197,772.24 and 79,653.76 is: 109,917.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,319.84 : 197,772.24 = 79,653.76 : x
  2. Step 2: Convert to fraction form
    143,319.84/197,772.24 = 79,653.76/x
  3. Step 3: Cross multiply
    143,319.84x = 197,772.24 × 79,653.76
  4. Step 4: Simplify right side
    143,319.84x = 15,753,302,539.62
  5. Step 5: Solve for x
    x = 15,753,302,539.62/143,319.84
  6. Step 6: Final answer
    x = 109,917.11

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1.5x scale

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.