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Finding the Fourth Proportional to 171,424.89, 257,303.19 and 82,740.84

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Solution

The fourth proportional to 171,424.89, 257,303.19 and 82,740.84 is: 124,191.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,424.89 : 257,303.19 = 82,740.84 : x
  2. Step 2: Convert to fraction form
    171,424.89/257,303.19 = 82,740.84/x
  3. Step 3: Cross multiply
    171,424.89x = 257,303.19 × 82,740.84
  4. Step 4: Simplify right side
    171,424.89x = 21,289,482,075.28
  5. Step 5: Solve for x
    x = 21,289,482,075.28/171,424.89
  6. Step 6: Final answer
    x = 124,191.31

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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.