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Finding the Fourth Proportional to 165,409.80, 247,968.90 and 98,779.20

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Solution

The fourth proportional to 165,409.80, 247,968.90 and 98,779.20 is: 148,081.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,409.80 : 247,968.90 = 98,779.20 : x
  2. Step 2: Convert to fraction form
    165,409.80/247,968.90 = 98,779.20/x
  3. Step 3: Cross multiply
    165,409.80x = 247,968.90 × 98,779.20
  4. Step 4: Simplify right side
    165,409.80x = 24,494,169,566.88
  5. Step 5: Solve for x
    x = 24,494,169,566.88/165,409.80
  6. Step 6: Final answer
    x = 148,081.73

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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.