Home / 90,148.60-135,245.04-30,985.12

Finding the Fourth Proportional to 90,148.60, 135,245.04 and 30,985.12

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Solution

The fourth proportional to 90,148.60, 135,245.04 and 30,985.12 is: 46,485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,148.60 : 135,245.04 = 30,985.12 : x
  2. Step 2: Convert to fraction form
    90,148.60/135,245.04 = 30,985.12/x
  3. Step 3: Cross multiply
    90,148.60x = 135,245.04 × 30,985.12
  4. Step 4: Simplify right side
    90,148.60x = 4,190,583,793.80
  5. Step 5: Solve for x
    x = 4,190,583,793.80/90,148.60
  6. Step 6: Final answer
    x = 46,485.29

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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.