Home / 142,586.42-196,755.79-85,214.33

Finding the Fourth Proportional to 142,586.42, 196,755.79 and 85,214.33

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Solution

The fourth proportional to 142,586.42, 196,755.79 and 85,214.33 is: 117,587.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,586.42 : 196,755.79 = 85,214.33 : x
  2. Step 2: Convert to fraction form
    142,586.42/196,755.79 = 85,214.33/x
  3. Step 3: Cross multiply
    142,586.42x = 196,755.79 × 85,214.33
  4. Step 4: Simplify right side
    142,586.42x = 16,766,412,818.47
  5. Step 5: Solve for x
    x = 16,766,412,818.47/142,586.42
  6. Step 6: Final answer
    x = 117,587.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.