Home / 135,388.16-203,213.44-65,316.72

Finding the Fourth Proportional to 135,388.16, 203,213.44 and 65,316.72

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Solution

The fourth proportional to 135,388.16, 203,213.44 and 65,316.72 is: 98,038.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,388.16 : 203,213.44 = 65,316.72 : x
  2. Step 2: Convert to fraction form
    135,388.16/203,213.44 = 65,316.72/x
  3. Step 3: Cross multiply
    135,388.16x = 203,213.44 × 65,316.72
  4. Step 4: Simplify right side
    135,388.16x = 13,273,235,360.72
  5. Step 5: Solve for x
    x = 13,273,235,360.72/135,388.16
  6. Step 6: Final answer
    x = 98,038.38

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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.