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Finding the Fourth Proportional to 146,800.60, 220,200.90 and 121,431.40

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Solution

The fourth proportional to 146,800.60, 220,200.90 and 121,431.40 is: 182,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,800.60 : 220,200.90 = 121,431.40 : x
  2. Step 2: Convert to fraction form
    146,800.60/220,200.90 = 121,431.40/x
  3. Step 3: Cross multiply
    146,800.60x = 220,200.90 × 121,431.40
  4. Step 4: Simplify right side
    146,800.60x = 26,739,303,568.26
  5. Step 5: Solve for x
    x = 26,739,303,568.26/146,800.60
  6. Step 6: Final answer
    x = 182,147.10

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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.