Home / 139,968,007.20-209,952,010.80-138,624,314.40

Finding the Fourth Proportional to 139,968,007.20, 209,952,010.80 and 138,624,314.40

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Solution

The fourth proportional to 139,968,007.20, 209,952,010.80 and 138,624,314.40 is: 207,936,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,007.20 : 209,952,010.80 = 138,624,314.40 : x
  2. Step 2: Convert to fraction form
    139,968,007.20/209,952,010.80 = 138,624,314.40/x
  3. Step 3: Cross multiply
    139,968,007.20x = 209,952,010.80 × 138,624,314.40
  4. Step 4: Simplify right side
    139,968,007.20x = 29,104,453,554,051,400
  5. Step 5: Solve for x
    x = 29,104,453,554,051,400/139,968,007.20
  6. Step 6: Final answer
    x = 207,936,471.60

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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.