Home / 189,363.77-261,416.69-117,766.86

Finding the Fourth Proportional to 189,363.77, 261,416.69 and 117,766.86

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Solution

The fourth proportional to 189,363.77, 261,416.69 and 117,766.86 is: 162,577.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,363.77 : 261,416.69 = 117,766.86 : x
  2. Step 2: Convert to fraction form
    189,363.77/261,416.69 = 117,766.86/x
  3. Step 3: Cross multiply
    189,363.77x = 261,416.69 × 117,766.86
  4. Step 4: Simplify right side
    189,363.77x = 30,786,221,425.81
  5. Step 5: Solve for x
    x = 30,786,221,425.81/189,363.77
  6. Step 6: Final answer
    x = 162,577.15

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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.