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Finding the Fourth Proportional to 156,379.76, 215,798.82 and 92,679.74

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Solution

The fourth proportional to 156,379.76, 215,798.82 and 92,679.74 is: 127,894.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,379.76 : 215,798.82 = 92,679.74 : x
  2. Step 2: Convert to fraction form
    156,379.76/215,798.82 = 92,679.74/x
  3. Step 3: Cross multiply
    156,379.76x = 215,798.82 × 92,679.74
  4. Step 4: Simplify right side
    156,379.76x = 20,000,178,529.91
  5. Step 5: Solve for x
    x = 20,000,178,529.91/156,379.76
  6. Step 6: Final answer
    x = 127,894.93

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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.