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Finding the Fourth Proportional to 139,603,668.40, 209,405,502.60 and 37,367,706.03

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Solution

The fourth proportional to 139,603,668.40, 209,405,502.60 and 37,367,706.03 is: 56,051,559.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,603,668.40 : 209,405,502.60 = 37,367,706.03 : x
  2. Step 2: Convert to fraction form
    139,603,668.40/209,405,502.60 = 37,367,706.03/x
  3. Step 3: Cross multiply
    139,603,668.40x = 209,405,502.60 × 37,367,706.03
  4. Step 4: Simplify right side
    139,603,668.40x = 7,825,003,262,221,201
  5. Step 5: Solve for x
    x = 7,825,003,262,221,201/139,603,668.40
  6. Step 6: Final answer
    x = 56,051,559.05

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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.