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Finding the Fourth Proportional to 146,609.60, 219,655.20 and 130,020.80

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Solution

The fourth proportional to 146,609.60, 219,655.20 and 130,020.80 is: 194,801.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,609.60 : 219,655.20 = 130,020.80 : x
  2. Step 2: Convert to fraction form
    146,609.60/219,655.20 = 130,020.80/x
  3. Step 3: Cross multiply
    146,609.60x = 219,655.20 × 130,020.80
  4. Step 4: Simplify right side
    146,609.60x = 28,559,744,828.16
  5. Step 5: Solve for x
    x = 28,559,744,828.16/146,609.60
  6. Step 6: Final answer
    x = 194,801.33

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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.