Home / 97,719.40-146,892.30-90,785.80

Finding the Fourth Proportional to 97,719.40, 146,892.30 and 90,785.80

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Solution

The fourth proportional to 97,719.40, 146,892.30 and 90,785.80 is: 136,469.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,719.40 : 146,892.30 = 90,785.80 : x
  2. Step 2: Convert to fraction form
    97,719.40/146,892.30 = 90,785.80/x
  3. Step 3: Cross multiply
    97,719.40x = 146,892.30 × 90,785.80
  4. Step 4: Simplify right side
    97,719.40x = 13,335,734,969.34
  5. Step 5: Solve for x
    x = 13,335,734,969.34/97,719.40
  6. Step 6: Final answer
    x = 136,469.68

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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.