Home / 131,830.18-197,743.79-31,991.47

Finding the Fourth Proportional to 131,830.18, 197,743.79 and 31,991.47

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Solution

The fourth proportional to 131,830.18, 197,743.79 and 31,991.47 is: 47,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,830.18 : 197,743.79 = 31,991.47 : x
  2. Step 2: Convert to fraction form
    131,830.18/197,743.79 = 31,991.47/x
  3. Step 3: Cross multiply
    131,830.18x = 197,743.79 × 31,991.47
  4. Step 4: Simplify right side
    131,830.18x = 6,326,114,365.51
  5. Step 5: Solve for x
    x = 6,326,114,365.51/131,830.18
  6. Step 6: Final answer
    x = 47,986.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.