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Finding the Fourth Proportional to 133,300.39, 183,954.91 and 72,871.76

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Solution

The fourth proportional to 133,300.39, 183,954.91 and 72,871.76 is: 100,563.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,300.39 : 183,954.91 = 72,871.76 : x
  2. Step 2: Convert to fraction form
    133,300.39/183,954.91 = 72,871.76/x
  3. Step 3: Cross multiply
    133,300.39x = 183,954.91 × 72,871.76
  4. Step 4: Simplify right side
    133,300.39x = 13,405,118,052.34
  5. Step 5: Solve for x
    x = 13,405,118,052.34/133,300.39
  6. Step 6: Final answer
    x = 100,563.23

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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.