Home / 128,729,612.84-177,653,248.26-79,852,787.24

Finding the Fourth Proportional to 128,729,612.84, 177,653,248.26 and 79,852,787.24

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Solution

The fourth proportional to 128,729,612.84, 177,653,248.26 and 79,852,787.24 is: 110,200,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,729,612.84 : 177,653,248.26 = 79,852,787.24 : x
  2. Step 2: Convert to fraction form
    128,729,612.84/177,653,248.26 = 79,852,787.24/x
  3. Step 3: Cross multiply
    128,729,612.84x = 177,653,248.26 × 79,852,787.24
  4. Step 4: Simplify right side
    128,729,612.84x = 14,186,107,035,800,678
  5. Step 5: Solve for x
    x = 14,186,107,035,800,678/128,729,612.84
  6. Step 6: Final answer
    x = 110,200,805.57

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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.