Home / 186,530.40-279,763.20-68,140.80

Finding the Fourth Proportional to 186,530.40, 279,763.20 and 68,140.80

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Solution

The fourth proportional to 186,530.40, 279,763.20 and 68,140.80 is: 102,199.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,530.40 : 279,763.20 = 68,140.80 : x
  2. Step 2: Convert to fraction form
    186,530.40/279,763.20 = 68,140.80/x
  3. Step 3: Cross multiply
    186,530.40x = 279,763.20 × 68,140.80
  4. Step 4: Simplify right side
    186,530.40x = 19,063,288,258.56
  5. Step 5: Solve for x
    x = 19,063,288,258.56/186,530.40
  6. Step 6: Final answer
    x = 102,199.36

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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.