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Finding the Fourth Proportional to 132,908.64, 183,413.96 and 72,477.72

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Solution

The fourth proportional to 132,908.64, 183,413.96 and 72,477.72 is: 100,019.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,908.64 : 183,413.96 = 72,477.72 : x
  2. Step 2: Convert to fraction form
    132,908.64/183,413.96 = 72,477.72/x
  3. Step 3: Cross multiply
    132,908.64x = 183,413.96 × 72,477.72
  4. Step 4: Simplify right side
    132,908.64x = 13,293,425,274.58
  5. Step 5: Solve for x
    x = 13,293,425,274.58/132,908.64
  6. Step 6: Final answer
    x = 100,019.27

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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.