Home / 90,733.32-135,999.13-68,474.52

Finding the Fourth Proportional to 90,733.32, 135,999.13 and 68,474.52

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Solution

The fourth proportional to 90,733.32, 135,999.13 and 68,474.52 is: 102,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,733.32 : 135,999.13 = 68,474.52 : x
  2. Step 2: Convert to fraction form
    90,733.32/135,999.13 = 68,474.52/x
  3. Step 3: Cross multiply
    90,733.32x = 135,999.13 × 68,474.52
  4. Step 4: Simplify right side
    90,733.32x = 9,312,475,147.17
  5. Step 5: Solve for x
    x = 9,312,475,147.17/90,733.32
  6. Step 6: Final answer
    x = 102,635.67

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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.