Home / 148,040.76-221,981.18-76,786.77

Finding the Fourth Proportional to 148,040.76, 221,981.18 and 76,786.77

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Solution

The fourth proportional to 148,040.76, 221,981.18 and 76,786.77 is: 115,138.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,040.76 : 221,981.18 = 76,786.77 : x
  2. Step 2: Convert to fraction form
    148,040.76/221,981.18 = 76,786.77/x
  3. Step 3: Cross multiply
    148,040.76x = 221,981.18 × 76,786.77
  4. Step 4: Simplify right side
    148,040.76x = 17,045,217,192.49
  5. Step 5: Solve for x
    x = 17,045,217,192.49/148,040.76
  6. Step 6: Final answer
    x = 115,138.67

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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.