Home / 221,678.35-305,916.47-126,185.05

Finding the Fourth Proportional to 221,678.35, 305,916.47 and 126,185.05

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Solution

The fourth proportional to 221,678.35, 305,916.47 and 126,185.05 is: 174,135.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,678.35 : 305,916.47 = 126,185.05 : x
  2. Step 2: Convert to fraction form
    221,678.35/305,916.47 = 126,185.05/x
  3. Step 3: Cross multiply
    221,678.35x = 305,916.47 × 126,185.05
  4. Step 4: Simplify right side
    221,678.35x = 38,602,084,613.44
  5. Step 5: Solve for x
    x = 38,602,084,613.44/221,678.35
  6. Step 6: Final answer
    x = 174,135.57

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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.