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Finding the Fourth Proportional to 135,956.75, 203,955.81 and 69,360.51

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Solution

The fourth proportional to 135,956.75, 203,955.81 and 69,360.51 is: 104,051.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,956.75 : 203,955.81 = 69,360.51 : x
  2. Step 2: Convert to fraction form
    135,956.75/203,955.81 = 69,360.51/x
  3. Step 3: Cross multiply
    135,956.75x = 203,955.81 × 69,360.51
  4. Step 4: Simplify right side
    135,956.75x = 14,146,478,999.06
  5. Step 5: Solve for x
    x = 14,146,478,999.06/135,956.75
  6. Step 6: Final answer
    x = 104,051.32

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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.