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Finding the Fourth Proportional to 158,798.93, 219,142.89 and 87,183.57

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Solution

The fourth proportional to 158,798.93, 219,142.89 and 87,183.57 is: 120,313.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,798.93 : 219,142.89 = 87,183.57 : x
  2. Step 2: Convert to fraction form
    158,798.93/219,142.89 = 87,183.57/x
  3. Step 3: Cross multiply
    158,798.93x = 219,142.89 × 87,183.57
  4. Step 4: Simplify right side
    158,798.93x = 19,105,659,490.32
  5. Step 5: Solve for x
    x = 19,105,659,490.32/158,798.93
  6. Step 6: Final answer
    x = 120,313.53

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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.