Home / 90,000.45-134,873.91-68,858.64

Finding the Fourth Proportional to 90,000.45, 134,873.91 and 68,858.64

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Solution

The fourth proportional to 90,000.45, 134,873.91 and 68,858.64 is: 103,190.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,000.45 : 134,873.91 = 68,858.64 : x
  2. Step 2: Convert to fraction form
    90,000.45/134,873.91 = 68,858.64/x
  3. Step 3: Cross multiply
    90,000.45x = 134,873.91 × 68,858.64
  4. Step 4: Simplify right side
    90,000.45x = 9,287,234,014.08
  5. Step 5: Solve for x
    x = 9,287,234,014.08/90,000.45
  6. Step 6: Final answer
    x = 103,190.97

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1.5x scale

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.