Home / 135,515.72-203,459.77-69,000.54

Finding the Fourth Proportional to 135,515.72, 203,459.77 and 69,000.54

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Solution

The fourth proportional to 135,515.72, 203,459.77 and 69,000.54 is: 103,595.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,515.72 : 203,459.77 = 69,000.54 : x
  2. Step 2: Convert to fraction form
    135,515.72/203,459.77 = 69,000.54/x
  3. Step 3: Cross multiply
    135,515.72x = 203,459.77 × 69,000.54
  4. Step 4: Simplify right side
    135,515.72x = 14,038,833,998.28
  5. Step 5: Solve for x
    x = 14,038,833,998.28/135,515.72
  6. Step 6: Final answer
    x = 103,595.61

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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.