Home / 142,540,736.12-196,706,215.84-77,350,640.12

Finding the Fourth Proportional to 142,540,736.12, 196,706,215.84 and 77,350,640.12

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Solution

The fourth proportional to 142,540,736.12, 196,706,215.84 and 77,350,640.12 is: 106,743,883.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,540,736.12 : 196,706,215.84 = 77,350,640.12 : x
  2. Step 2: Convert to fraction form
    142,540,736.12/196,706,215.84 = 77,350,640.12/x
  3. Step 3: Cross multiply
    142,540,736.12x = 196,706,215.84 × 77,350,640.12
  4. Step 4: Simplify right side
    142,540,736.12x = 15,215,351,710,806,884
  5. Step 5: Solve for x
    x = 15,215,351,710,806,884/142,540,736.12
  6. Step 6: Final answer
    x = 106,743,883.36

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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.