Home / 128,729,611.84-177,653,246.88-79,852,786.24

Finding the Fourth Proportional to 128,729,611.84, 177,653,246.88 and 79,852,786.24

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Solution

The fourth proportional to 128,729,611.84, 177,653,246.88 and 79,852,786.24 is: 110,200,804.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,729,611.84 : 177,653,246.88 = 79,852,786.24 : x
  2. Step 2: Convert to fraction form
    128,729,611.84/177,653,246.88 = 79,852,786.24/x
  3. Step 3: Cross multiply
    128,729,611.84x = 177,653,246.88 × 79,852,786.24
  4. Step 4: Simplify right side
    128,729,611.84x = 14,186,106,747,950,586
  5. Step 5: Solve for x
    x = 14,186,106,747,950,586/128,729,611.84
  6. Step 6: Final answer
    x = 110,200,804.19

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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.