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Finding the Fourth Proportional to 155,505.78, 214,664.19 and 104,548.08

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Solution

The fourth proportional to 155,505.78, 214,664.19 and 104,548.08 is: 144,320.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,505.78 : 214,664.19 = 104,548.08 : x
  2. Step 2: Convert to fraction form
    155,505.78/214,664.19 = 104,548.08/x
  3. Step 3: Cross multiply
    155,505.78x = 214,664.19 × 104,548.08
  4. Step 4: Simplify right side
    155,505.78x = 22,442,728,909.26
  5. Step 5: Solve for x
    x = 22,442,728,909.26/155,505.78
  6. Step 6: Final answer
    x = 144,320.87

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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.