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Finding the Fourth Proportional to 143,315.88, 197,774.46 and 79,652.32

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Solution

The fourth proportional to 143,315.88, 197,774.46 and 79,652.32 is: 109,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,315.88 : 197,774.46 = 79,652.32 : x
  2. Step 2: Convert to fraction form
    143,315.88/197,774.46 = 79,652.32/x
  3. Step 3: Cross multiply
    143,315.88x = 197,774.46 × 79,652.32
  4. Step 4: Simplify right side
    143,315.88x = 15,753,194,575.75
  5. Step 5: Solve for x
    x = 15,753,194,575.75/143,315.88
  6. Step 6: Final answer
    x = 109,919.39

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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.