Home / 223,811.90-308,860.40-121,838.09

Finding the Fourth Proportional to 223,811.90, 308,860.40 and 121,838.09

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Solution

The fourth proportional to 223,811.90, 308,860.40 and 121,838.09 is: 168,136.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,811.90 : 308,860.40 = 121,838.09 : x
  2. Step 2: Convert to fraction form
    223,811.90/308,860.40 = 121,838.09/x
  3. Step 3: Cross multiply
    223,811.90x = 308,860.40 × 121,838.09
  4. Step 4: Simplify right side
    223,811.90x = 37,630,961,212.64
  5. Step 5: Solve for x
    x = 37,630,961,212.64/223,811.90
  6. Step 6: Final answer
    x = 168,136.55

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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.