Home / 90,433.86-135,633.03-66,519.01

Finding the Fourth Proportional to 90,433.86, 135,633.03 and 66,519.01

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Solution

The fourth proportional to 90,433.86, 135,633.03 and 66,519.01 is: 99,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,433.86 : 135,633.03 = 66,519.01 : x
  2. Step 2: Convert to fraction form
    90,433.86/135,633.03 = 66,519.01/x
  3. Step 3: Cross multiply
    90,433.86x = 135,633.03 × 66,519.01
  4. Step 4: Simplify right side
    90,433.86x = 9,022,174,878.90
  5. Step 5: Solve for x
    x = 9,022,174,878.90/90,433.86
  6. Step 6: Final answer
    x = 99,765.45

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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.