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Finding the Fourth Proportional to 159,101.06, 219,560.28 and 87,485.70

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Solution

The fourth proportional to 159,101.06, 219,560.28 and 87,485.70 is: 120,730.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,101.06 : 219,560.28 = 87,485.70 : x
  2. Step 2: Convert to fraction form
    159,101.06/219,560.28 = 87,485.70/x
  3. Step 3: Cross multiply
    159,101.06x = 219,560.28 × 87,485.70
  4. Step 4: Simplify right side
    159,101.06x = 19,208,384,788.00
  5. Step 5: Solve for x
    x = 19,208,384,788.00/159,101.06
  6. Step 6: Final answer
    x = 120,730.72

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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.