Home / 199,485.40-298,985.10-86,927.80

Finding the Fourth Proportional to 199,485.40, 298,985.10 and 86,927.80

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Solution

The fourth proportional to 199,485.40, 298,985.10 and 86,927.80 is: 130,285.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,485.40 : 298,985.10 = 86,927.80 : x
  2. Step 2: Convert to fraction form
    199,485.40/298,985.10 = 86,927.80/x
  3. Step 3: Cross multiply
    199,485.40x = 298,985.10 × 86,927.80
  4. Step 4: Simplify right side
    199,485.40x = 25,990,116,975.78
  5. Step 5: Solve for x
    x = 25,990,116,975.78/199,485.40
  6. Step 6: Final answer
    x = 130,285.81

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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.