Home / 258,150.04-387,211.14-80,636.68

Finding the Fourth Proportional to 258,150.04, 387,211.14 and 80,636.68

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Solution

The fourth proportional to 258,150.04, 387,211.14 and 80,636.68 is: 120,950.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,150.04 : 387,211.14 = 80,636.68 : x
  2. Step 2: Convert to fraction form
    258,150.04/387,211.14 = 80,636.68/x
  3. Step 3: Cross multiply
    258,150.04x = 387,211.14 × 80,636.68
  4. Step 4: Simplify right side
    258,150.04x = 31,223,420,788.62
  5. Step 5: Solve for x
    x = 31,223,420,788.62/258,150.04
  6. Step 6: Final answer
    x = 120,950.67

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1.5x scale

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.