Home / 139,968,015.30-209,952,022.95-71,943,567.30

Finding the Fourth Proportional to 139,968,015.30, 209,952,022.95 and 71,943,567.30

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Solution

The fourth proportional to 139,968,015.30, 209,952,022.95 and 71,943,567.30 is: 107,915,350.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,015.30 : 209,952,022.95 = 71,943,567.30 : x
  2. Step 2: Convert to fraction form
    139,968,015.30/209,952,022.95 = 71,943,567.30/x
  3. Step 3: Cross multiply
    139,968,015.30x = 209,952,022.95 × 71,943,567.30
  4. Step 4: Simplify right side
    139,968,015.30x = 15,104,697,492,874,468
  5. Step 5: Solve for x
    x = 15,104,697,492,874,468/139,968,015.30
  6. Step 6: Final answer
    x = 107,915,350.95

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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.