Home / 147,556.80-221,450.40-68,680.80

Finding the Fourth Proportional to 147,556.80, 221,450.40 and 68,680.80

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Solution

The fourth proportional to 147,556.80, 221,450.40 and 68,680.80 is: 103,074.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,556.80 : 221,450.40 = 68,680.80 : x
  2. Step 2: Convert to fraction form
    147,556.80/221,450.40 = 68,680.80/x
  3. Step 3: Cross multiply
    147,556.80x = 221,450.40 × 68,680.80
  4. Step 4: Simplify right side
    147,556.80x = 15,209,390,632.32
  5. Step 5: Solve for x
    x = 15,209,390,632.32/147,556.80
  6. Step 6: Final answer
    x = 103,074.82

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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.