Home / 90,515.60-135,812.28-64,388.24

Finding the Fourth Proportional to 90,515.60, 135,812.28 and 64,388.24

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Solution

The fourth proportional to 90,515.60, 135,812.28 and 64,388.24 is: 96,610.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,515.60 : 135,812.28 = 64,388.24 : x
  2. Step 2: Convert to fraction form
    90,515.60/135,812.28 = 64,388.24/x
  3. Step 3: Cross multiply
    90,515.60x = 135,812.28 × 64,388.24
  4. Step 4: Simplify right side
    90,515.60x = 8,744,713,679.59
  5. Step 5: Solve for x
    x = 8,744,713,679.59/90,515.60
  6. Step 6: Final answer
    x = 96,610.02

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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.