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Finding the Fourth Proportional to 116,005.60, 173,619.60 and 81,013.60

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Solution

The fourth proportional to 116,005.60, 173,619.60 and 81,013.60 is: 121,248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,005.60 : 173,619.60 = 81,013.60 : x
  2. Step 2: Convert to fraction form
    116,005.60/173,619.60 = 81,013.60/x
  3. Step 3: Cross multiply
    116,005.60x = 173,619.60 × 81,013.60
  4. Step 4: Simplify right side
    116,005.60x = 14,065,548,826.56
  5. Step 5: Solve for x
    x = 14,065,548,826.56/116,005.60
  6. Step 6: Final answer
    x = 121,248.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.