Home / 189,403.20-284,104.80-71,078.40

Finding the Fourth Proportional to 189,403.20, 284,104.80 and 71,078.40

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Solution

The fourth proportional to 189,403.20, 284,104.80 and 71,078.40 is: 106,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,403.20 : 284,104.80 = 71,078.40 : x
  2. Step 2: Convert to fraction form
    189,403.20/284,104.80 = 71,078.40/x
  3. Step 3: Cross multiply
    189,403.20x = 284,104.80 × 71,078.40
  4. Step 4: Simplify right side
    189,403.20x = 20,193,714,616.32
  5. Step 5: Solve for x
    x = 20,193,714,616.32/189,403.20
  6. Step 6: Final answer
    x = 106,617.60

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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.