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Finding the Fourth Proportional to 131,878.70, 197,818.05 and 43,110.80

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Solution

The fourth proportional to 131,878.70, 197,818.05 and 43,110.80 is: 64,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,878.70 : 197,818.05 = 43,110.80 : x
  2. Step 2: Convert to fraction form
    131,878.70/197,818.05 = 43,110.80/x
  3. Step 3: Cross multiply
    131,878.70x = 197,818.05 × 43,110.80
  4. Step 4: Simplify right side
    131,878.70x = 8,528,094,389.94
  5. Step 5: Solve for x
    x = 8,528,094,389.94/131,878.70
  6. Step 6: Final answer
    x = 64,666.20

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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.