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Finding the Fourth Proportional to 159,597.36, 220,245.84 and 87,979.98

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Solution

The fourth proportional to 159,597.36, 220,245.84 and 87,979.98 is: 121,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,597.36 : 220,245.84 = 87,979.98 : x
  2. Step 2: Convert to fraction form
    159,597.36/220,245.84 = 87,979.98/x
  3. Step 3: Cross multiply
    159,597.36x = 220,245.84 × 87,979.98
  4. Step 4: Simplify right side
    159,597.36x = 19,377,224,598.28
  5. Step 5: Solve for x
    x = 19,377,224,598.28/159,597.36
  6. Step 6: Final answer
    x = 121,413.19

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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.