Home / 154,343.51-212,997.87-86,359.93

Finding the Fourth Proportional to 154,343.51, 212,997.87 and 86,359.93

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Solution

The fourth proportional to 154,343.51, 212,997.87 and 86,359.93 is: 119,178.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,343.51 : 212,997.87 = 86,359.93 : x
  2. Step 2: Convert to fraction form
    154,343.51/212,997.87 = 86,359.93/x
  3. Step 3: Cross multiply
    154,343.51x = 212,997.87 × 86,359.93
  4. Step 4: Simplify right side
    154,343.51x = 18,394,481,143.35
  5. Step 5: Solve for x
    x = 18,394,481,143.35/154,343.51
  6. Step 6: Final answer
    x = 119,178.84

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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.