Home / 209,173.07-288,661.08-113,679.78

Finding the Fourth Proportional to 209,173.07, 288,661.08 and 113,679.78

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Solution

The fourth proportional to 209,173.07, 288,661.08 and 113,679.78 is: 156,879.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,173.07 : 288,661.08 = 113,679.78 : x
  2. Step 2: Convert to fraction form
    209,173.07/288,661.08 = 113,679.78/x
  3. Step 3: Cross multiply
    209,173.07x = 288,661.08 × 113,679.78
  4. Step 4: Simplify right side
    209,173.07x = 32,814,928,068.96
  5. Step 5: Solve for x
    x = 32,814,928,068.96/209,173.07
  6. Step 6: Final answer
    x = 156,879.32

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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.