Home / 128,093.20-191,880.60-72,624.40

Finding the Fourth Proportional to 128,093.20, 191,880.60 and 72,624.40

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Solution

The fourth proportional to 128,093.20, 191,880.60 and 72,624.40 is: 108,789.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,093.20 : 191,880.60 = 72,624.40 : x
  2. Step 2: Convert to fraction form
    128,093.20/191,880.60 = 72,624.40/x
  3. Step 3: Cross multiply
    128,093.20x = 191,880.60 × 72,624.40
  4. Step 4: Simplify right side
    128,093.20x = 13,935,213,446.64
  5. Step 5: Solve for x
    x = 13,935,213,446.64/128,093.20
  6. Step 6: Final answer
    x = 108,789.64

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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.