Home / 154,152.30-212,725.71-86,169.41

Finding the Fourth Proportional to 154,152.30, 212,725.71 and 86,169.41

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Solution

The fourth proportional to 154,152.30, 212,725.71 and 86,169.41 is: 118,911.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,152.30 : 212,725.71 = 86,169.41 : x
  2. Step 2: Convert to fraction form
    154,152.30/212,725.71 = 86,169.41/x
  3. Step 3: Cross multiply
    154,152.30x = 212,725.71 × 86,169.41
  4. Step 4: Simplify right side
    154,152.30x = 18,330,448,922.53
  5. Step 5: Solve for x
    x = 18,330,448,922.53/154,152.30
  6. Step 6: Final answer
    x = 118,911.29

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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.