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Finding the Fourth Proportional to 133,040.32, 183,594 and 72,611.92

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Solution

The fourth proportional to 133,040.32, 183,594 and 72,611.92 is: 100,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,040.32 : 183,594 = 72,611.92 : x
  2. Step 2: Convert to fraction form
    133,040.32/183,594 = 72,611.92/x
  3. Step 3: Cross multiply
    133,040.32x = 183,594 × 72,611.92
  4. Step 4: Simplify right side
    133,040.32x = 13,331,112,840.48
  5. Step 5: Solve for x
    x = 13,331,112,840.48/133,040.32
  6. Step 6: Final answer
    x = 100,203.55

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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.