Home / 209,186.64-288,678.60-113,695.20

Finding the Fourth Proportional to 209,186.64, 288,678.60 and 113,695.20

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Solution

The fourth proportional to 209,186.64, 288,678.60 and 113,695.20 is: 156,899.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,186.64 : 288,678.60 = 113,695.20 : x
  2. Step 2: Convert to fraction form
    209,186.64/288,678.60 = 113,695.20/x
  3. Step 3: Cross multiply
    209,186.64x = 288,678.60 × 113,695.20
  4. Step 4: Simplify right side
    209,186.64x = 32,821,371,162.72
  5. Step 5: Solve for x
    x = 32,821,371,162.72/209,186.64
  6. Step 6: Final answer
    x = 156,899.94

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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.