Home / 199,487.40-298,988.10-86,929.80

Finding the Fourth Proportional to 199,487.40, 298,988.10 and 86,929.80

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Solution

The fourth proportional to 199,487.40, 298,988.10 and 86,929.80 is: 130,288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,487.40 : 298,988.10 = 86,929.80 : x
  2. Step 2: Convert to fraction form
    199,487.40/298,988.10 = 86,929.80/x
  3. Step 3: Cross multiply
    199,487.40x = 298,988.10 × 86,929.80
  4. Step 4: Simplify right side
    199,487.40x = 25,990,975,735.38
  5. Step 5: Solve for x
    x = 25,990,975,735.38/199,487.40
  6. Step 6: Final answer
    x = 130,288.81

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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.