Home / 144,511,910.31-199,426,633.17-78,432,409.42

Finding the Fourth Proportional to 144,511,910.31, 199,426,633.17 and 78,432,409.42

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Solution

The fourth proportional to 144,511,910.31, 199,426,633.17 and 78,432,409.42 is: 108,236,831.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,511,910.31 : 199,426,633.17 = 78,432,409.42 : x
  2. Step 2: Convert to fraction form
    144,511,910.31/199,426,633.17 = 78,432,409.42/x
  3. Step 3: Cross multiply
    144,511,910.31x = 199,426,633.17 × 78,432,409.42
  4. Step 4: Simplify right side
    144,511,910.31x = 15,641,511,341,649,430
  5. Step 5: Solve for x
    x = 15,641,511,341,649,430/144,511,910.31
  6. Step 6: Final answer
    x = 108,236,831.89

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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.