Home / 143,868,990.63-198,531,055.40-81,141,339.42

Finding the Fourth Proportional to 143,868,990.63, 198,531,055.40 and 81,141,339.42

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Solution

The fourth proportional to 143,868,990.63, 198,531,055.40 and 81,141,339.42 is: 111,970,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,868,990.63 : 198,531,055.40 = 81,141,339.42 : x
  2. Step 2: Convert to fraction form
    143,868,990.63/198,531,055.40 = 81,141,339.42/x
  3. Step 3: Cross multiply
    143,868,990.63x = 198,531,055.40 × 81,141,339.42
  4. Step 4: Simplify right side
    143,868,990.63x = 16,109,075,752,003,604
  5. Step 5: Solve for x
    x = 16,109,075,752,003,604/143,868,990.63
  6. Step 6: Final answer
    x = 111,970,450.90

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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.