Home / 130,753.12-196,089.36-68,389.60

Finding the Fourth Proportional to 130,753.12, 196,089.36 and 68,389.60

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Solution

The fourth proportional to 130,753.12, 196,089.36 and 68,389.60 is: 102,563.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,753.12 : 196,089.36 = 68,389.60 : x
  2. Step 2: Convert to fraction form
    130,753.12/196,089.36 = 68,389.60/x
  3. Step 3: Cross multiply
    130,753.12x = 196,089.36 × 68,389.60
  4. Step 4: Simplify right side
    130,753.12x = 13,410,472,894.66
  5. Step 5: Solve for x
    x = 13,410,472,894.66/130,753.12
  6. Step 6: Final answer
    x = 102,563.31

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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.