Home / 223,913.82-309,006.60-137,840.78

Finding the Fourth Proportional to 223,913.82, 309,006.60 and 137,840.78

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Solution

The fourth proportional to 223,913.82, 309,006.60 and 137,840.78 is: 190,223.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,913.82 : 309,006.60 = 137,840.78 : x
  2. Step 2: Convert to fraction form
    223,913.82/309,006.60 = 137,840.78/x
  3. Step 3: Cross multiply
    223,913.82x = 309,006.60 × 137,840.78
  4. Step 4: Simplify right side
    223,913.82x = 42,593,710,769.15
  5. Step 5: Solve for x
    x = 42,593,710,769.15/223,913.82
  6. Step 6: Final answer
    x = 190,223.68

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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.