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Finding the Fourth Proportional to 133,687.88, 184,489.28 and 79,975.16

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Solution

The fourth proportional to 133,687.88, 184,489.28 and 79,975.16 is: 110,365.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,687.88 : 184,489.28 = 79,975.16 : x
  2. Step 2: Convert to fraction form
    133,687.88/184,489.28 = 79,975.16/x
  3. Step 3: Cross multiply
    133,687.88x = 184,489.28 × 79,975.16
  4. Step 4: Simplify right side
    133,687.88x = 14,754,559,686.28
  5. Step 5: Solve for x
    x = 14,754,559,686.28/133,687.88
  6. Step 6: Final answer
    x = 110,365.72

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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.