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Finding the Fourth Proportional to 131,427.60, 197,170.20 and 64,899.60

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Solution

The fourth proportional to 131,427.60, 197,170.20 and 64,899.60 is: 97,363.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,427.60 : 197,170.20 = 64,899.60 : x
  2. Step 2: Convert to fraction form
    131,427.60/197,170.20 = 64,899.60/x
  3. Step 3: Cross multiply
    131,427.60x = 197,170.20 × 64,899.60
  4. Step 4: Simplify right side
    131,427.60x = 12,796,267,111.92
  5. Step 5: Solve for x
    x = 12,796,267,111.92/131,427.60
  6. Step 6: Final answer
    x = 97,363.62

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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.