Home / 100,870.38-151,305.30-30,749.67

Finding the Fourth Proportional to 100,870.38, 151,305.30 and 30,749.67

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Solution

The fourth proportional to 100,870.38, 151,305.30 and 30,749.67 is: 46,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,870.38 : 151,305.30 = 30,749.67 : x
  2. Step 2: Convert to fraction form
    100,870.38/151,305.30 = 30,749.67/x
  3. Step 3: Cross multiply
    100,870.38x = 151,305.30 × 30,749.67
  4. Step 4: Simplify right side
    100,870.38x = 4,652,588,044.25
  5. Step 5: Solve for x
    x = 4,652,588,044.25/100,870.38
  6. Step 6: Final answer
    x = 46,124.42

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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.