Home / 209,639.64-289,303.05-114,146.73

Finding the Fourth Proportional to 209,639.64, 289,303.05 and 114,146.73

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Solution

The fourth proportional to 209,639.64, 289,303.05 and 114,146.73 is: 157,522.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,639.64 : 289,303.05 = 114,146.73 : x
  2. Step 2: Convert to fraction form
    209,639.64/289,303.05 = 114,146.73/x
  3. Step 3: Cross multiply
    209,639.64x = 289,303.05 × 114,146.73
  4. Step 4: Simplify right side
    209,639.64x = 33,022,997,136.53
  5. Step 5: Solve for x
    x = 33,022,997,136.53/209,639.64
  6. Step 6: Final answer
    x = 157,522.68

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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.