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Finding the Fourth Proportional to 163,413.32, 225,534.93 and 99,787.82

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Solution

The fourth proportional to 163,413.32, 225,534.93 and 99,787.82 is: 137,722.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,413.32 : 225,534.93 = 99,787.82 : x
  2. Step 2: Convert to fraction form
    163,413.32/225,534.93 = 99,787.82/x
  3. Step 3: Cross multiply
    163,413.32x = 225,534.93 × 99,787.82
  4. Step 4: Simplify right side
    163,413.32x = 22,505,638,998.55
  5. Step 5: Solve for x
    x = 22,505,638,998.55/163,413.32
  6. Step 6: Final answer
    x = 137,722.18

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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.