Home / 189,728.17-261,816.84-103,685.11

Finding the Fourth Proportional to 189,728.17, 261,816.84 and 103,685.11

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Solution

The fourth proportional to 189,728.17, 261,816.84 and 103,685.11 is: 143,081.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,728.17 : 261,816.84 = 103,685.11 : x
  2. Step 2: Convert to fraction form
    189,728.17/261,816.84 = 103,685.11/x
  3. Step 3: Cross multiply
    189,728.17x = 261,816.84 × 103,685.11
  4. Step 4: Simplify right side
    189,728.17x = 27,146,507,855.25
  5. Step 5: Solve for x
    x = 27,146,507,855.25/189,728.17
  6. Step 6: Final answer
    x = 143,081.06

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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.