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Finding the Fourth Proportional to 133,157.54, 183,763.35 and 72,728.66

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Solution

The fourth proportional to 133,157.54, 183,763.35 and 72,728.66 is: 100,368.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,157.54 : 183,763.35 = 72,728.66 : x
  2. Step 2: Convert to fraction form
    133,157.54/183,763.35 = 72,728.66/x
  3. Step 3: Cross multiply
    133,157.54x = 183,763.35 × 72,728.66
  4. Step 4: Simplify right side
    133,157.54x = 13,364,861,283.79
  5. Step 5: Solve for x
    x = 13,364,861,283.79/133,157.54
  6. Step 6: Final answer
    x = 100,368.79

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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.