Home / 209,172.07-288,659.70-113,678.78

Finding the Fourth Proportional to 209,172.07, 288,659.70 and 113,678.78

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Solution

The fourth proportional to 209,172.07, 288,659.70 and 113,678.78 is: 156,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,172.07 : 288,659.70 = 113,678.78 : x
  2. Step 2: Convert to fraction form
    209,172.07/288,659.70 = 113,678.78/x
  3. Step 3: Cross multiply
    209,172.07x = 288,659.70 × 113,678.78
  4. Step 4: Simplify right side
    209,172.07x = 32,814,481,087.87
  5. Step 5: Solve for x
    x = 32,814,481,087.87/209,172.07
  6. Step 6: Final answer
    x = 156,877.93

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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.