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Finding the Fourth Proportional to 186,791.65, 257,693.93 and 130,235.83

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Solution

The fourth proportional to 186,791.65, 257,693.93 and 130,235.83 is: 179,670.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,791.65 : 257,693.93 = 130,235.83 : x
  2. Step 2: Convert to fraction form
    186,791.65/257,693.93 = 130,235.83/x
  3. Step 3: Cross multiply
    186,791.65x = 257,693.93 × 130,235.83
  4. Step 4: Simplify right side
    186,791.65x = 33,560,982,859.51
  5. Step 5: Solve for x
    x = 33,560,982,859.51/186,791.65
  6. Step 6: Final answer
    x = 179,670.68

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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.