Home / 154,185.60-212,812.08-100,377.36

Finding the Fourth Proportional to 154,185.60, 212,812.08 and 100,377.36

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Solution

The fourth proportional to 154,185.60, 212,812.08 and 100,377.36 is: 138,544.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,185.60 : 212,812.08 = 100,377.36 : x
  2. Step 2: Convert to fraction form
    154,185.60/212,812.08 = 100,377.36/x
  3. Step 3: Cross multiply
    154,185.60x = 212,812.08 × 100,377.36
  4. Step 4: Simplify right side
    154,185.60x = 21,361,514,766.51
  5. Step 5: Solve for x
    x = 21,361,514,766.51/154,185.60
  6. Step 6: Final answer
    x = 138,544.16

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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.