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Finding the Fourth Proportional to 162,918.78, 244,360.14 and 42,987.90

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Solution

The fourth proportional to 162,918.78, 244,360.14 and 42,987.90 is: 64,477.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,918.78 : 244,360.14 = 42,987.90 : x
  2. Step 2: Convert to fraction form
    162,918.78/244,360.14 = 42,987.90/x
  3. Step 3: Cross multiply
    162,918.78x = 244,360.14 × 42,987.90
  4. Step 4: Simplify right side
    162,918.78x = 10,504,529,262.31
  5. Step 5: Solve for x
    x = 10,504,529,262.31/162,918.78
  6. Step 6: Final answer
    x = 64,477.09

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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.