Home / 128,440.60-192,660.90-102,002.20

Finding the Fourth Proportional to 128,440.60, 192,660.90 and 102,002.20

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Solution

The fourth proportional to 128,440.60, 192,660.90 and 102,002.20 is: 153,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,440.60 : 192,660.90 = 102,002.20 : x
  2. Step 2: Convert to fraction form
    128,440.60/192,660.90 = 102,002.20/x
  3. Step 3: Cross multiply
    128,440.60x = 192,660.90 × 102,002.20
  4. Step 4: Simplify right side
    128,440.60x = 19,651,835,653.98
  5. Step 5: Solve for x
    x = 19,651,835,653.98/128,440.60
  6. Step 6: Final answer
    x = 153,003.30

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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.