Home / 148,954.21-205,544.59-87,690.67

Finding the Fourth Proportional to 148,954.21, 205,544.59 and 87,690.67

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Solution

The fourth proportional to 148,954.21, 205,544.59 and 87,690.67 is: 121,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,954.21 : 205,544.59 = 87,690.67 : x
  2. Step 2: Convert to fraction form
    148,954.21/205,544.59 = 87,690.67/x
  3. Step 3: Cross multiply
    148,954.21x = 205,544.59 × 87,690.67
  4. Step 4: Simplify right side
    148,954.21x = 18,024,342,811.98
  5. Step 5: Solve for x
    x = 18,024,342,811.98/148,954.21
  6. Step 6: Final answer
    x = 121,005.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.