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Finding the Fourth Proportional to 131,434.80, 197,152.20 and 64,885.20

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Solution

The fourth proportional to 131,434.80, 197,152.20 and 64,885.20 is: 97,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,434.80 : 197,152.20 = 64,885.20 : x
  2. Step 2: Convert to fraction form
    131,434.80/197,152.20 = 64,885.20/x
  3. Step 3: Cross multiply
    131,434.80x = 197,152.20 × 64,885.20
  4. Step 4: Simplify right side
    131,434.80x = 12,792,259,927.44
  5. Step 5: Solve for x
    x = 12,792,259,927.44/131,434.80
  6. Step 6: Final answer
    x = 97,327.80

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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.