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Finding the Fourth Proportional to 133,301.76, 183,957.65 and 72,871.30

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Solution

The fourth proportional to 133,301.76, 183,957.65 and 72,871.30 is: 100,563.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,301.76 : 183,957.65 = 72,871.30 : x
  2. Step 2: Convert to fraction form
    133,301.76/183,957.65 = 72,871.30/x
  3. Step 3: Cross multiply
    133,301.76x = 183,957.65 × 72,871.30
  4. Step 4: Simplify right side
    133,301.76x = 13,405,233,100.45
  5. Step 5: Solve for x
    x = 13,405,233,100.45/133,301.76
  6. Step 6: Final answer
    x = 100,563.06

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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.