Home / 189,724.17-261,811.32-103,681.11

Finding the Fourth Proportional to 189,724.17, 261,811.32 and 103,681.11

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Solution

The fourth proportional to 189,724.17, 261,811.32 and 103,681.11 is: 143,075.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,724.17 : 261,811.32 = 103,681.11 : x
  2. Step 2: Convert to fraction form
    189,724.17/261,811.32 = 103,681.11/x
  3. Step 3: Cross multiply
    189,724.17x = 261,811.32 × 103,681.11
  4. Step 4: Simplify right side
    189,724.17x = 27,144,888,268.17
  5. Step 5: Solve for x
    x = 27,144,888,268.17/189,724.17
  6. Step 6: Final answer
    x = 143,075.54

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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.