Home / 186,125.09-256,831.75-109,639.20

Finding the Fourth Proportional to 186,125.09, 256,831.75 and 109,639.20

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Solution

The fourth proportional to 186,125.09, 256,831.75 and 109,639.20 is: 151,289.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,125.09 : 256,831.75 = 109,639.20 : x
  2. Step 2: Convert to fraction form
    186,125.09/256,831.75 = 109,639.20/x
  3. Step 3: Cross multiply
    186,125.09x = 256,831.75 × 109,639.20
  4. Step 4: Simplify right side
    186,125.09x = 28,158,827,604.60
  5. Step 5: Solve for x
    x = 28,158,827,604.60/186,125.09
  6. Step 6: Final answer
    x = 151,289.80

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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.