Home / 135,459.03-186,956.64-78,087.96

Finding the Fourth Proportional to 135,459.03, 186,956.64 and 78,087.96

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Solution

The fourth proportional to 135,459.03, 186,956.64 and 78,087.96 is: 107,774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,459.03 : 186,956.64 = 78,087.96 : x
  2. Step 2: Convert to fraction form
    135,459.03/186,956.64 = 78,087.96/x
  3. Step 3: Cross multiply
    135,459.03x = 186,956.64 × 78,087.96
  4. Step 4: Simplify right side
    135,459.03x = 14,599,062,626.05
  5. Step 5: Solve for x
    x = 14,599,062,626.05/135,459.03
  6. Step 6: Final answer
    x = 107,774.75

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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.