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Finding the Fourth Proportional to 123,071.80, 184,553.70 and 56,489.80

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Solution

The fourth proportional to 123,071.80, 184,553.70 and 56,489.80 is: 84,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,071.80 : 184,553.70 = 56,489.80 : x
  2. Step 2: Convert to fraction form
    123,071.80/184,553.70 = 56,489.80/x
  3. Step 3: Cross multiply
    123,071.80x = 184,553.70 × 56,489.80
  4. Step 4: Simplify right side
    123,071.80x = 10,425,401,602.26
  5. Step 5: Solve for x
    x = 10,425,401,602.26/123,071.80
  6. Step 6: Final answer
    x = 84,709.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.