Home / 131,112.60-196,539.30-52,121.40

Finding the Fourth Proportional to 131,112.60, 196,539.30 and 52,121.40

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Solution

The fourth proportional to 131,112.60, 196,539.30 and 52,121.40 is: 78,130.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,112.60 : 196,539.30 = 52,121.40 : x
  2. Step 2: Convert to fraction form
    131,112.60/196,539.30 = 52,121.40/x
  3. Step 3: Cross multiply
    131,112.60x = 196,539.30 × 52,121.40
  4. Step 4: Simplify right side
    131,112.60x = 10,243,903,471.02
  5. Step 5: Solve for x
    x = 10,243,903,471.02/131,112.60
  6. Step 6: Final answer
    x = 78,130.58

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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.