Home / 131,387.20-197,109.60-42,625.60

Finding the Fourth Proportional to 131,387.20, 197,109.60 and 42,625.60

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Solution

The fourth proportional to 131,387.20, 197,109.60 and 42,625.60 is: 63,947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,387.20 : 197,109.60 = 42,625.60 : x
  2. Step 2: Convert to fraction form
    131,387.20/197,109.60 = 42,625.60/x
  3. Step 3: Cross multiply
    131,387.20x = 197,109.60 × 42,625.60
  4. Step 4: Simplify right side
    131,387.20x = 8,401,914,965.76
  5. Step 5: Solve for x
    x = 8,401,914,965.76/131,387.20
  6. Step 6: Final answer
    x = 63,947.74

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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.