Home / 189,775.65-261,895.97-103,739.39

Finding the Fourth Proportional to 189,775.65, 261,895.97 and 103,739.39

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Solution

The fourth proportional to 189,775.65, 261,895.97 and 103,739.39 is: 143,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,775.65 : 261,895.97 = 103,739.39 : x
  2. Step 2: Convert to fraction form
    189,775.65/261,895.97 = 103,739.39/x
  3. Step 3: Cross multiply
    189,775.65x = 261,895.97 × 103,739.39
  4. Step 4: Simplify right side
    189,775.65x = 27,168,926,343.08
  5. Step 5: Solve for x
    x = 27,168,926,343.08/189,775.65
  6. Step 6: Final answer
    x = 143,163.40

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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.