Home / 139,968,008.20-209,952,012.30-138,624,315.40

Finding the Fourth Proportional to 139,968,008.20, 209,952,012.30 and 138,624,315.40

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Solution

The fourth proportional to 139,968,008.20, 209,952,012.30 and 138,624,315.40 is: 207,936,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,008.20 : 209,952,012.30 = 138,624,315.40 : x
  2. Step 2: Convert to fraction form
    139,968,008.20/209,952,012.30 = 138,624,315.40/x
  3. Step 3: Cross multiply
    139,968,008.20x = 209,952,012.30 × 138,624,315.40
  4. Step 4: Simplify right side
    139,968,008.20x = 29,104,453,971,939,884
  5. Step 5: Solve for x
    x = 29,104,453,971,939,884/139,968,008.20
  6. Step 6: Final answer
    x = 207,936,473.10

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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.