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Finding the Fourth Proportional to 156,246.66, 215,620.30 and 84,626.66

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Solution

The fourth proportional to 156,246.66, 215,620.30 and 84,626.66 is: 116,784.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,246.66 : 215,620.30 = 84,626.66 : x
  2. Step 2: Convert to fraction form
    156,246.66/215,620.30 = 84,626.66/x
  3. Step 3: Cross multiply
    156,246.66x = 215,620.30 × 84,626.66
  4. Step 4: Simplify right side
    156,246.66x = 18,247,225,817.20
  5. Step 5: Solve for x
    x = 18,247,225,817.20/156,246.66
  6. Step 6: Final answer
    x = 116,784.74

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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.