Home / 209,043.72-288,485.70-113,555.88

Finding the Fourth Proportional to 209,043.72, 288,485.70 and 113,555.88

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Solution

The fourth proportional to 209,043.72, 288,485.70 and 113,555.88 is: 156,710.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,043.72 : 288,485.70 = 113,555.88 : x
  2. Step 2: Convert to fraction form
    209,043.72/288,485.70 = 113,555.88/x
  3. Step 3: Cross multiply
    209,043.72x = 288,485.70 × 113,555.88
  4. Step 4: Simplify right side
    209,043.72x = 32,759,247,530.92
  5. Step 5: Solve for x
    x = 32,759,247,530.92/209,043.72
  6. Step 6: Final answer
    x = 156,710.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.