Home / 130,938.72-196,408.20-42,205.44

Finding the Fourth Proportional to 130,938.72, 196,408.20 and 42,205.44

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Solution

The fourth proportional to 130,938.72, 196,408.20 and 42,205.44 is: 63,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,938.72 : 196,408.20 = 42,205.44 : x
  2. Step 2: Convert to fraction form
    130,938.72/196,408.20 = 42,205.44/x
  3. Step 3: Cross multiply
    130,938.72x = 196,408.20 × 42,205.44
  4. Step 4: Simplify right side
    130,938.72x = 8,289,494,500.61
  5. Step 5: Solve for x
    x = 8,289,494,500.61/130,938.72
  6. Step 6: Final answer
    x = 63,308.20

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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.