Home / 90,601.20-135,815.40-70,599.60

Finding the Fourth Proportional to 90,601.20, 135,815.40 and 70,599.60

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Solution

The fourth proportional to 90,601.20, 135,815.40 and 70,599.60 is: 105,832.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,601.20 : 135,815.40 = 70,599.60 : x
  2. Step 2: Convert to fraction form
    90,601.20/135,815.40 = 70,599.60/x
  3. Step 3: Cross multiply
    90,601.20x = 135,815.40 × 70,599.60
  4. Step 4: Simplify right side
    90,601.20x = 9,588,512,913.84
  5. Step 5: Solve for x
    x = 9,588,512,913.84/90,601.20
  6. Step 6: Final answer
    x = 105,832.07

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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.