Home / 209,200.19-313,623.95-90,782.34

Finding the Fourth Proportional to 209,200.19, 313,623.95 and 90,782.34

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Solution

The fourth proportional to 209,200.19, 313,623.95 and 90,782.34 is: 136,096.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,200.19 : 313,623.95 = 90,782.34 : x
  2. Step 2: Convert to fraction form
    209,200.19/313,623.95 = 90,782.34/x
  3. Step 3: Cross multiply
    209,200.19x = 313,623.95 × 90,782.34
  4. Step 4: Simplify right side
    209,200.19x = 28,471,515,607.13
  5. Step 5: Solve for x
    x = 28,471,515,607.13/209,200.19
  6. Step 6: Final answer
    x = 136,096.99

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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.