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Finding the Fourth Proportional to 79,423.20, 119,211.60 and 67,749.60

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Solution

The fourth proportional to 79,423.20, 119,211.60 and 67,749.60 is: 101,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,423.20 : 119,211.60 = 67,749.60 : x
  2. Step 2: Convert to fraction form
    79,423.20/119,211.60 = 67,749.60/x
  3. Step 3: Cross multiply
    79,423.20x = 119,211.60 × 67,749.60
  4. Step 4: Simplify right side
    79,423.20x = 8,076,538,215.36
  5. Step 5: Solve for x
    x = 8,076,538,215.36/79,423.20
  6. Step 6: Final answer
    x = 101,689.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.