Home / 103,953.20-156,002.70-66,604.10

Finding the Fourth Proportional to 103,953.20, 156,002.70 and 66,604.10

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Solution

The fourth proportional to 103,953.20, 156,002.70 and 66,604.10 is: 99,952.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,953.20 : 156,002.70 = 66,604.10 : x
  2. Step 2: Convert to fraction form
    103,953.20/156,002.70 = 66,604.10/x
  3. Step 3: Cross multiply
    103,953.20x = 156,002.70 × 66,604.10
  4. Step 4: Simplify right side
    103,953.20x = 10,390,419,431.07
  5. Step 5: Solve for x
    x = 10,390,419,431.07/103,953.20
  6. Step 6: Final answer
    x = 99,952.86

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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.