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Finding the Fourth Proportional to 131,477.60, 197,086.80 and 64,863.20

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Solution

The fourth proportional to 131,477.60, 197,086.80 and 64,863.20 is: 97,230.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,477.60 : 197,086.80 = 64,863.20 : x
  2. Step 2: Convert to fraction form
    131,477.60/197,086.80 = 64,863.20/x
  3. Step 3: Cross multiply
    131,477.60x = 197,086.80 × 64,863.20
  4. Step 4: Simplify right side
    131,477.60x = 12,783,680,525.76
  5. Step 5: Solve for x
    x = 12,783,680,525.76/131,477.60
  6. Step 6: Final answer
    x = 97,230.86

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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.