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Finding the Fourth Proportional to 159,413.95, 219,988.57 and 87,800.64

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Solution

The fourth proportional to 159,413.95, 219,988.57 and 87,800.64 is: 121,163.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,413.95 : 219,988.57 = 87,800.64 : x
  2. Step 2: Convert to fraction form
    159,413.95/219,988.57 = 87,800.64/x
  3. Step 3: Cross multiply
    159,413.95x = 219,988.57 × 87,800.64
  4. Step 4: Simplify right side
    159,413.95x = 19,315,137,238.68
  5. Step 5: Solve for x
    x = 19,315,137,238.68/159,413.95
  6. Step 6: Final answer
    x = 121,163.41

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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.