Home / 131,551.45-197,376.89-78,997.57

Finding the Fourth Proportional to 131,551.45, 197,376.89 and 78,997.57

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Solution

The fourth proportional to 131,551.45, 197,376.89 and 78,997.57 is: 118,526.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,551.45 : 197,376.89 = 78,997.57 : x
  2. Step 2: Convert to fraction form
    131,551.45/197,376.89 = 78,997.57/x
  3. Step 3: Cross multiply
    131,551.45x = 197,376.89 × 78,997.57
  4. Step 4: Simplify right side
    131,551.45x = 15,592,294,684.01
  5. Step 5: Solve for x
    x = 15,592,294,684.01/131,551.45
  6. Step 6: Final answer
    x = 118,526.21

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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.