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Finding the Fourth Proportional to 159,203.60, 219,699.39 and 87,583.70

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Solution

The fourth proportional to 159,203.60, 219,699.39 and 87,583.70 is: 120,864.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,203.60 : 219,699.39 = 87,583.70 : x
  2. Step 2: Convert to fraction form
    159,203.60/219,699.39 = 87,583.70/x
  3. Step 3: Cross multiply
    159,203.60x = 219,699.39 × 87,583.70
  4. Step 4: Simplify right side
    159,203.60x = 19,242,085,463.94
  5. Step 5: Solve for x
    x = 19,242,085,463.94/159,203.60
  6. Step 6: Final answer
    x = 120,864.64

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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.