Home / 90,327.28-135,539.16-67,987.06

Finding the Fourth Proportional to 90,327.28, 135,539.16 and 67,987.06

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Solution

The fourth proportional to 90,327.28, 135,539.16 and 67,987.06 is: 102,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,327.28 : 135,539.16 = 67,987.06 : x
  2. Step 2: Convert to fraction form
    90,327.28/135,539.16 = 67,987.06/x
  3. Step 3: Cross multiply
    90,327.28x = 135,539.16 × 67,987.06
  4. Step 4: Simplify right side
    90,327.28x = 9,214,909,003.27
  5. Step 5: Solve for x
    x = 9,214,909,003.27/90,327.28
  6. Step 6: Final answer
    x = 102,016.90

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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.