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Finding the Fourth Proportional to 151,379.34, 208,903.35 and 87,754.02

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Solution

The fourth proportional to 151,379.34, 208,903.35 and 87,754.02 is: 121,100.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,379.34 : 208,903.35 = 87,754.02 : x
  2. Step 2: Convert to fraction form
    151,379.34/208,903.35 = 87,754.02/x
  3. Step 3: Cross multiply
    151,379.34x = 208,903.35 × 87,754.02
  4. Step 4: Simplify right side
    151,379.34x = 18,332,108,753.97
  5. Step 5: Solve for x
    x = 18,332,108,753.97/151,379.34
  6. Step 6: Final answer
    x = 121,100.47

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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.