Home / 143,925,136.32-198,621,382.32-78,735,040.32

Finding the Fourth Proportional to 143,925,136.32, 198,621,382.32 and 78,735,040.32

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Solution

The fourth proportional to 143,925,136.32, 198,621,382.32 and 78,735,040.32 is: 108,656,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,925,136.32 : 198,621,382.32 = 78,735,040.32 : x
  2. Step 2: Convert to fraction form
    143,925,136.32/198,621,382.32 = 78,735,040.32/x
  3. Step 3: Cross multiply
    143,925,136.32x = 198,621,382.32 × 78,735,040.32
  4. Step 4: Simplify right side
    143,925,136.32x = 15,638,462,545,379,334
  5. Step 5: Solve for x
    x = 15,638,462,545,379,334/143,925,136.32
  6. Step 6: Final answer
    x = 108,656,923.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.