Home / 131,435.20-197,152.80-61,321.60

Finding the Fourth Proportional to 131,435.20, 197,152.80 and 61,321.60

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Solution

The fourth proportional to 131,435.20, 197,152.80 and 61,321.60 is: 91,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,435.20 : 197,152.80 = 61,321.60 : x
  2. Step 2: Convert to fraction form
    131,435.20/197,152.80 = 61,321.60/x
  3. Step 3: Cross multiply
    131,435.20x = 197,152.80 × 61,321.60
  4. Step 4: Simplify right side
    131,435.20x = 12,089,725,140.48
  5. Step 5: Solve for x
    x = 12,089,725,140.48/131,435.20
  6. Step 6: Final answer
    x = 91,982.40

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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.