Home / 139,969,344.30-209,954,016.45-49,060,128.30

Finding the Fourth Proportional to 139,969,344.30, 209,954,016.45 and 49,060,128.30

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Solution

The fourth proportional to 139,969,344.30, 209,954,016.45 and 49,060,128.30 is: 73,590,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,344.30 : 209,954,016.45 = 49,060,128.30 : x
  2. Step 2: Convert to fraction form
    139,969,344.30/209,954,016.45 = 49,060,128.30/x
  3. Step 3: Cross multiply
    139,969,344.30x = 209,954,016.45 × 49,060,128.30
  4. Step 4: Simplify right side
    139,969,344.30x = 10,300,370,984,137,310
  5. Step 5: Solve for x
    x = 10,300,370,984,137,310/139,969,344.30
  6. Step 6: Final answer
    x = 73,590,192.45

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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.