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Finding the Fourth Proportional to 139,896,007.20, 209,844,010.80 and 110,670,688.80

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Solution

The fourth proportional to 139,896,007.20, 209,844,010.80 and 110,670,688.80 is: 166,006,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,896,007.20 : 209,844,010.80 = 110,670,688.80 : x
  2. Step 2: Convert to fraction form
    139,896,007.20/209,844,010.80 = 110,670,688.80/x
  3. Step 3: Cross multiply
    139,896,007.20x = 209,844,010.80 × 110,670,688.80
  4. Step 4: Simplify right side
    139,896,007.20x = 23,223,581,215,790,640
  5. Step 5: Solve for x
    x = 23,223,581,215,790,640/139,896,007.20
  6. Step 6: Final answer
    x = 166,006,033.20

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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.