Home / 131,402.20-197,132.10-42,640.60

Finding the Fourth Proportional to 131,402.20, 197,132.10 and 42,640.60

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Solution

The fourth proportional to 131,402.20, 197,132.10 and 42,640.60 is: 63,970.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,402.20 : 197,132.10 = 42,640.60 : x
  2. Step 2: Convert to fraction form
    131,402.20/197,132.10 = 42,640.60/x
  3. Step 3: Cross multiply
    131,402.20x = 197,132.10 × 42,640.60
  4. Step 4: Simplify right side
    131,402.20x = 8,405,831,023.26
  5. Step 5: Solve for x
    x = 8,405,831,023.26/131,402.20
  6. Step 6: Final answer
    x = 63,970.25

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1.5x scale

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.