Home / 105,978,638.12-146,229,080.46-61,917,127.28

Finding the Fourth Proportional to 105,978,638.12, 146,229,080.46 and 61,917,127.28

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Solution

The fourth proportional to 105,978,638.12, 146,229,080.46 and 61,917,127.28 is: 85,433,109.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,978,638.12 : 146,229,080.46 = 61,917,127.28 : x
  2. Step 2: Convert to fraction form
    105,978,638.12/146,229,080.46 = 61,917,127.28/x
  3. Step 3: Cross multiply
    105,978,638.12x = 146,229,080.46 × 61,917,127.28
  4. Step 4: Simplify right side
    105,978,638.12x = 9,054,084,586,879,182
  5. Step 5: Solve for x
    x = 9,054,084,586,879,182/105,978,638.12
  6. Step 6: Final answer
    x = 85,433,109.42

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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.