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Finding the Fourth Proportional to 156,295.54, 215,687.55 and 84,677.50

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Solution

The fourth proportional to 156,295.54, 215,687.55 and 84,677.50 is: 116,854.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,295.54 : 215,687.55 = 84,677.50 : x
  2. Step 2: Convert to fraction form
    156,295.54/215,687.55 = 84,677.50/x
  3. Step 3: Cross multiply
    156,295.54x = 215,687.55 × 84,677.50
  4. Step 4: Simplify right side
    156,295.54x = 18,263,882,515.13
  5. Step 5: Solve for x
    x = 18,263,882,515.13/156,295.54
  6. Step 6: Final answer
    x = 116,854.79

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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.