Home / 189,399.20-284,098.80-71,074.40

Finding the Fourth Proportional to 189,399.20, 284,098.80 and 71,074.40

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Solution

The fourth proportional to 189,399.20, 284,098.80 and 71,074.40 is: 106,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,399.20 : 284,098.80 = 71,074.40 : x
  2. Step 2: Convert to fraction form
    189,399.20/284,098.80 = 71,074.40/x
  3. Step 3: Cross multiply
    189,399.20x = 284,098.80 × 71,074.40
  4. Step 4: Simplify right side
    189,399.20x = 20,192,151,750.72
  5. Step 5: Solve for x
    x = 20,192,151,750.72/189,399.20
  6. Step 6: Final answer
    x = 106,611.60

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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.