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Finding the Fourth Proportional to 133,108.71, 183,697.45 and 72,684.96

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Solution

The fourth proportional to 133,108.71, 183,697.45 and 72,684.96 is: 100,309.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,108.71 : 183,697.45 = 72,684.96 : x
  2. Step 2: Convert to fraction form
    133,108.71/183,697.45 = 72,684.96/x
  3. Step 3: Cross multiply
    133,108.71x = 183,697.45 × 72,684.96
  4. Step 4: Simplify right side
    133,108.71x = 13,352,041,343.63
  5. Step 5: Solve for x
    x = 13,352,041,343.63/133,108.71
  6. Step 6: Final answer
    x = 100,309.30

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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.