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Finding the Fourth Proportional to 131,432.60, 197,019.30 and 64,818.20

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Solution

The fourth proportional to 131,432.60, 197,019.30 and 64,818.20 is: 97,163.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,432.60 : 197,019.30 = 64,818.20 : x
  2. Step 2: Convert to fraction form
    131,432.60/197,019.30 = 64,818.20/x
  3. Step 3: Cross multiply
    131,432.60x = 197,019.30 × 64,818.20
  4. Step 4: Simplify right side
    131,432.60x = 12,770,436,391.26
  5. Step 5: Solve for x
    x = 12,770,436,391.26/131,432.60
  6. Step 6: Final answer
    x = 97,163.39

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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.