Home / 105,129.05-157,717.72-30,249.82

Finding the Fourth Proportional to 105,129.05, 157,717.72 and 30,249.82

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Solution

The fourth proportional to 105,129.05, 157,717.72 and 30,249.82 is: 45,381.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,129.05 : 157,717.72 = 30,249.82 : x
  2. Step 2: Convert to fraction form
    105,129.05/157,717.72 = 30,249.82/x
  3. Step 3: Cross multiply
    105,129.05x = 157,717.72 × 30,249.82
  4. Step 4: Simplify right side
    105,129.05x = 4,770,931,927.85
  5. Step 5: Solve for x
    x = 4,770,931,927.85/105,129.05
  6. Step 6: Final answer
    x = 45,381.67

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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.