Home / 230,985.35-318,739.04-128,996.66

Finding the Fourth Proportional to 230,985.35, 318,739.04 and 128,996.66

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Solution

The fourth proportional to 230,985.35, 318,739.04 and 128,996.66 is: 178,003.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,985.35 : 318,739.04 = 128,996.66 : x
  2. Step 2: Convert to fraction form
    230,985.35/318,739.04 = 128,996.66/x
  3. Step 3: Cross multiply
    230,985.35x = 318,739.04 × 128,996.66
  4. Step 4: Simplify right side
    230,985.35x = 41,116,271,571.61
  5. Step 5: Solve for x
    x = 41,116,271,571.61/230,985.35
  6. Step 6: Final answer
    x = 178,003.81

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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.