Home / 209,955.63-289,697.72-123,941.55

Finding the Fourth Proportional to 209,955.63, 289,697.72 and 123,941.55

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Solution

The fourth proportional to 209,955.63, 289,697.72 and 123,941.55 is: 171,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,955.63 : 289,697.72 = 123,941.55 : x
  2. Step 2: Convert to fraction form
    209,955.63/289,697.72 = 123,941.55/x
  3. Step 3: Cross multiply
    209,955.63x = 289,697.72 × 123,941.55
  4. Step 4: Simplify right side
    209,955.63x = 35,905,583,828.56
  5. Step 5: Solve for x
    x = 35,905,583,828.56/209,955.63
  6. Step 6: Final answer
    x = 171,015.10

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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.