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Finding the Fourth Proportional to 170,441.60, 255,662.40 and 120,675.20

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Solution

The fourth proportional to 170,441.60, 255,662.40 and 120,675.20 is: 181,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,441.60 : 255,662.40 = 120,675.20 : x
  2. Step 2: Convert to fraction form
    170,441.60/255,662.40 = 120,675.20/x
  3. Step 3: Cross multiply
    170,441.60x = 255,662.40 × 120,675.20
  4. Step 4: Simplify right side
    170,441.60x = 30,852,111,252.48
  5. Step 5: Solve for x
    x = 30,852,111,252.48/170,441.60
  6. Step 6: Final answer
    x = 181,012.80

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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.