Home / 90,137.16-135,148.50-47,991.24

Finding the Fourth Proportional to 90,137.16, 135,148.50 and 47,991.24

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Solution

The fourth proportional to 90,137.16, 135,148.50 and 47,991.24 is: 71,956.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,137.16 : 135,148.50 = 47,991.24 : x
  2. Step 2: Convert to fraction form
    90,137.16/135,148.50 = 47,991.24/x
  3. Step 3: Cross multiply
    90,137.16x = 135,148.50 × 47,991.24
  4. Step 4: Simplify right side
    90,137.16x = 6,485,944,099.14
  5. Step 5: Solve for x
    x = 6,485,944,099.14/90,137.16
  6. Step 6: Final answer
    x = 71,956.38

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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.