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Finding the Fourth Proportional to 195,678.90, 270,043.56 and 109,641.48

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Solution

The fourth proportional to 195,678.90, 270,043.56 and 109,641.48 is: 151,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,678.90 : 270,043.56 = 109,641.48 : x
  2. Step 2: Convert to fraction form
    195,678.90/270,043.56 = 109,641.48/x
  3. Step 3: Cross multiply
    195,678.90x = 270,043.56 × 109,641.48
  4. Step 4: Simplify right side
    195,678.90x = 29,607,975,582.87
  5. Step 5: Solve for x
    x = 29,607,975,582.87/195,678.90
  6. Step 6: Final answer
    x = 151,308.98

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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.