Home / 136,219.70-187,980.25-78,861.44

Finding the Fourth Proportional to 136,219.70, 187,980.25 and 78,861.44

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Solution

The fourth proportional to 136,219.70, 187,980.25 and 78,861.44 is: 108,827.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,219.70 : 187,980.25 = 78,861.44 : x
  2. Step 2: Convert to fraction form
    136,219.70/187,980.25 = 78,861.44/x
  3. Step 3: Cross multiply
    136,219.70x = 187,980.25 × 78,861.44
  4. Step 4: Simplify right side
    136,219.70x = 14,824,393,627.22
  5. Step 5: Solve for x
    x = 14,824,393,627.22/136,219.70
  6. Step 6: Final answer
    x = 108,827.09

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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.