Home / 131,420.90-197,128.50-36,648.55

Finding the Fourth Proportional to 131,420.90, 197,128.50 and 36,648.55

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Solution

The fourth proportional to 131,420.90, 197,128.50 and 36,648.55 is: 54,972.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,420.90 : 197,128.50 = 36,648.55 : x
  2. Step 2: Convert to fraction form
    131,420.90/197,128.50 = 36,648.55/x
  3. Step 3: Cross multiply
    131,420.90x = 197,128.50 × 36,648.55
  4. Step 4: Simplify right side
    131,420.90x = 7,224,474,442.13
  5. Step 5: Solve for x
    x = 7,224,474,442.13/131,420.90
  6. Step 6: Final answer
    x = 54,972.04

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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.