Home / 143,575,573.44-198,133,280.67-78,385,477.44

Finding the Fourth Proportional to 143,575,573.44, 198,133,280.67 and 78,385,477.44

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Solution

The fourth proportional to 143,575,573.44, 198,133,280.67 and 78,385,477.44 is: 108,171,407.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,575,573.44 : 198,133,280.67 = 78,385,477.44 : x
  2. Step 2: Convert to fraction form
    143,575,573.44/198,133,280.67 = 78,385,477.44/x
  3. Step 3: Cross multiply
    143,575,573.44x = 198,133,280.67 × 78,385,477.44
  4. Step 4: Simplify right side
    143,575,573.44x = 15,530,771,802,071,472
  5. Step 5: Solve for x
    x = 15,530,771,802,071,472/143,575,573.44
  6. Step 6: Final answer
    x = 108,171,407.09

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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.