Home / 199,128.40-298,686.20-66,014.80

Finding the Fourth Proportional to 199,128.40, 298,686.20 and 66,014.80

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Solution

The fourth proportional to 199,128.40, 298,686.20 and 66,014.80 is: 99,020.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,128.40 : 298,686.20 = 66,014.80 : x
  2. Step 2: Convert to fraction form
    199,128.40/298,686.20 = 66,014.80/x
  3. Step 3: Cross multiply
    199,128.40x = 298,686.20 × 66,014.80
  4. Step 4: Simplify right side
    199,128.40x = 19,717,709,755.76
  5. Step 5: Solve for x
    x = 19,717,709,755.76/199,128.40
  6. Step 6: Final answer
    x = 99,020.08

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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.