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Finding the Fourth Proportional to 170,758, 235,662.77 and 99,133.75

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Solution

The fourth proportional to 170,758, 235,662.77 and 99,133.75 is: 136,814.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,758 : 235,662.77 = 99,133.75 : x
  2. Step 2: Convert to fraction form
    170,758/235,662.77 = 99,133.75/x
  3. Step 3: Cross multiply
    170,758x = 235,662.77 × 99,133.75
  4. Step 4: Simplify right side
    170,758x = 23,362,134,125.49
  5. Step 5: Solve for x
    x = 23,362,134,125.49/170,758
  6. Step 6: Final answer
    x = 136,814.29

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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.