Home / 143,178.15-197,586.30-79,515.95

Finding the Fourth Proportional to 143,178.15, 197,586.30 and 79,515.95

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Solution

The fourth proportional to 143,178.15, 197,586.30 and 79,515.95 is: 109,732.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,178.15 : 197,586.30 = 79,515.95 : x
  2. Step 2: Convert to fraction form
    143,178.15/197,586.30 = 79,515.95/x
  3. Step 3: Cross multiply
    143,178.15x = 197,586.30 × 79,515.95
  4. Step 4: Simplify right side
    143,178.15x = 15,711,261,363.55
  5. Step 5: Solve for x
    x = 15,711,261,363.55/143,178.15
  6. Step 6: Final answer
    x = 109,732.26

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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.