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Finding the Fourth Proportional to 131,505.60, 197,031.60 and 61,240.80

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Solution

The fourth proportional to 131,505.60, 197,031.60 and 61,240.80 is: 91,755.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,505.60 : 197,031.60 = 61,240.80 : x
  2. Step 2: Convert to fraction form
    131,505.60/197,031.60 = 61,240.80/x
  3. Step 3: Cross multiply
    131,505.60x = 197,031.60 × 61,240.80
  4. Step 4: Simplify right side
    131,505.60x = 12,066,372,809.28
  5. Step 5: Solve for x
    x = 12,066,372,809.28/131,505.60
  6. Step 6: Final answer
    x = 91,755.58

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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.