Home / 170,735.40-255,872.70-121,429.80

Finding the Fourth Proportional to 170,735.40, 255,872.70 and 121,429.80

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Solution

The fourth proportional to 170,735.40, 255,872.70 and 121,429.80 is: 181,980.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,735.40 : 255,872.70 = 121,429.80 : x
  2. Step 2: Convert to fraction form
    170,735.40/255,872.70 = 121,429.80/x
  3. Step 3: Cross multiply
    170,735.40x = 255,872.70 × 121,429.80
  4. Step 4: Simplify right side
    170,735.40x = 31,070,570,786.46
  5. Step 5: Solve for x
    x = 31,070,570,786.46/170,735.40
  6. Step 6: Final answer
    x = 181,980.84

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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.