Home / 90,679.20-136,023.36-64,308.64

Finding the Fourth Proportional to 90,679.20, 136,023.36 and 64,308.64

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Solution

The fourth proportional to 90,679.20, 136,023.36 and 64,308.64 is: 96,466.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,679.20 : 136,023.36 = 64,308.64 : x
  2. Step 2: Convert to fraction form
    90,679.20/136,023.36 = 64,308.64/x
  3. Step 3: Cross multiply
    90,679.20x = 136,023.36 × 64,308.64
  4. Step 4: Simplify right side
    90,679.20x = 8,747,477,289.83
  5. Step 5: Solve for x
    x = 8,747,477,289.83/90,679.20
  6. Step 6: Final answer
    x = 96,466.19

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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.