Home / 235,787.20-325,376.38-128,355

Finding the Fourth Proportional to 235,787.20, 325,376.38 and 128,355

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Solution

The fourth proportional to 235,787.20, 325,376.38 and 128,355 is: 177,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,787.20 : 325,376.38 = 128,355 : x
  2. Step 2: Convert to fraction form
    235,787.20/325,376.38 = 128,355/x
  3. Step 3: Cross multiply
    235,787.20x = 325,376.38 × 128,355
  4. Step 4: Simplify right side
    235,787.20x = 41,763,685,254.90
  5. Step 5: Solve for x
    x = 41,763,685,254.90/235,787.20
  6. Step 6: Final answer
    x = 177,124.48

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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.