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Finding the Fourth Proportional to 158,682.27, 218,974.28 and 87,060.81

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Solution

The fourth proportional to 158,682.27, 218,974.28 and 87,060.81 is: 120,139.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,682.27 : 218,974.28 = 87,060.81 : x
  2. Step 2: Convert to fraction form
    158,682.27/218,974.28 = 87,060.81/x
  3. Step 3: Cross multiply
    158,682.27x = 218,974.28 × 87,060.81
  4. Step 4: Simplify right side
    158,682.27x = 19,064,077,750.66
  5. Step 5: Solve for x
    x = 19,064,077,750.66/158,682.27
  6. Step 6: Final answer
    x = 120,139.94

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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.