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Finding the Fourth Proportional to 146,669.60, 220,004.40 and 53,178.40

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Solution

The fourth proportional to 146,669.60, 220,004.40 and 53,178.40 is: 79,767.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,669.60 : 220,004.40 = 53,178.40 : x
  2. Step 2: Convert to fraction form
    146,669.60/220,004.40 = 53,178.40/x
  3. Step 3: Cross multiply
    146,669.60x = 220,004.40 × 53,178.40
  4. Step 4: Simplify right side
    146,669.60x = 11,699,481,984.96
  5. Step 5: Solve for x
    x = 11,699,481,984.96/146,669.60
  6. Step 6: Final answer
    x = 79,767.60

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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.