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Finding the Fourth Proportional to 159,709.86, 220,400.10 and 88,091.01

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Solution

The fourth proportional to 159,709.86, 220,400.10 and 88,091.01 is: 121,565.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,709.86 : 220,400.10 = 88,091.01 : x
  2. Step 2: Convert to fraction form
    159,709.86/220,400.10 = 88,091.01/x
  3. Step 3: Cross multiply
    159,709.86x = 220,400.10 × 88,091.01
  4. Step 4: Simplify right side
    159,709.86x = 19,415,267,413.10
  5. Step 5: Solve for x
    x = 19,415,267,413.10/159,709.86
  6. Step 6: Final answer
    x = 121,565.87

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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.