Home / 126,319.83-189,384.90-76,389.67

Finding the Fourth Proportional to 126,319.83, 189,384.90 and 76,389.67

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Solution

The fourth proportional to 126,319.83, 189,384.90 and 76,389.67 is: 114,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,319.83 : 189,384.90 = 76,389.67 : x
  2. Step 2: Convert to fraction form
    126,319.83/189,384.90 = 76,389.67/x
  3. Step 3: Cross multiply
    126,319.83x = 189,384.90 × 76,389.67
  4. Step 4: Simplify right side
    126,319.83x = 14,467,050,013.98
  5. Step 5: Solve for x
    x = 14,467,050,013.98/126,319.83
  6. Step 6: Final answer
    x = 114,527.15

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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.