Home / 209,129.91-288,598.73-113,636.61

Finding the Fourth Proportional to 209,129.91, 288,598.73 and 113,636.61

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Solution

The fourth proportional to 209,129.91, 288,598.73 and 113,636.61 is: 156,818.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,129.91 : 288,598.73 = 113,636.61 : x
  2. Step 2: Convert to fraction form
    209,129.91/288,598.73 = 113,636.61/x
  3. Step 3: Cross multiply
    209,129.91x = 288,598.73 × 113,636.61
  4. Step 4: Simplify right side
    209,129.91x = 32,795,381,327.51
  5. Step 5: Solve for x
    x = 32,795,381,327.51/209,129.91
  6. Step 6: Final answer
    x = 156,818.23

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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.