Home / 143,171.43-197,582.54-79,509.75

Finding the Fourth Proportional to 143,171.43, 197,582.54 and 79,509.75

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Solution

The fourth proportional to 143,171.43, 197,582.54 and 79,509.75 is: 109,726.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,171.43 : 197,582.54 = 79,509.75 : x
  2. Step 2: Convert to fraction form
    143,171.43/197,582.54 = 79,509.75/x
  3. Step 3: Cross multiply
    143,171.43x = 197,582.54 × 79,509.75
  4. Step 4: Simplify right side
    143,171.43x = 15,709,737,962.22
  5. Step 5: Solve for x
    x = 15,709,737,962.22/143,171.43
  6. Step 6: Final answer
    x = 109,726.77

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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.