Home / 130,749.12-196,083.36-68,385.60

Finding the Fourth Proportional to 130,749.12, 196,083.36 and 68,385.60

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Solution

The fourth proportional to 130,749.12, 196,083.36 and 68,385.60 is: 102,557.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,749.12 : 196,083.36 = 68,385.60 : x
  2. Step 2: Convert to fraction form
    130,749.12/196,083.36 = 68,385.60/x
  3. Step 3: Cross multiply
    130,749.12x = 196,083.36 × 68,385.60
  4. Step 4: Simplify right side
    130,749.12x = 13,409,278,223.62
  5. Step 5: Solve for x
    x = 13,409,278,223.62/130,749.12
  6. Step 6: Final answer
    x = 102,557.31

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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.