Home / 189,767.64-261,831.90-108,077.40

Finding the Fourth Proportional to 189,767.64, 261,831.90 and 108,077.40

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Solution

The fourth proportional to 189,767.64, 261,831.90 and 108,077.40 is: 149,119.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,767.64 : 261,831.90 = 108,077.40 : x
  2. Step 2: Convert to fraction form
    189,767.64/261,831.90 = 108,077.40/x
  3. Step 3: Cross multiply
    189,767.64x = 261,831.90 × 108,077.40
  4. Step 4: Simplify right side
    189,767.64x = 28,298,110,989.06
  5. Step 5: Solve for x
    x = 28,298,110,989.06/189,767.64
  6. Step 6: Final answer
    x = 149,119.79

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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.