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Finding the Fourth Proportional to 133,133.42, 183,723.19 and 72,704.07

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Solution

The fourth proportional to 133,133.42, 183,723.19 and 72,704.07 is: 100,331.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,133.42 : 183,723.19 = 72,704.07 : x
  2. Step 2: Convert to fraction form
    133,133.42/183,723.19 = 72,704.07/x
  3. Step 3: Cross multiply
    133,133.42x = 183,723.19 × 72,704.07
  4. Step 4: Simplify right side
    133,133.42x = 13,357,423,666.38
  5. Step 5: Solve for x
    x = 13,357,423,666.38/133,133.42
  6. Step 6: Final answer
    x = 100,331.11

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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.