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Finding the Fourth Proportional to 189,718.80, 284,383.80 and 110,792.40

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Solution

The fourth proportional to 189,718.80, 284,383.80 and 110,792.40 is: 166,075.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,718.80 : 284,383.80 = 110,792.40 : x
  2. Step 2: Convert to fraction form
    189,718.80/284,383.80 = 110,792.40/x
  3. Step 3: Cross multiply
    189,718.80x = 284,383.80 × 110,792.40
  4. Step 4: Simplify right side
    189,718.80x = 31,507,563,723.12
  5. Step 5: Solve for x
    x = 31,507,563,723.12/189,718.80
  6. Step 6: Final answer
    x = 166,075.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.