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Finding the Fourth Proportional to 169,638.40, 254,457.60 and 98,779.60

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Solution

The fourth proportional to 169,638.40, 254,457.60 and 98,779.60 is: 148,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,638.40 : 254,457.60 = 98,779.60 : x
  2. Step 2: Convert to fraction form
    169,638.40/254,457.60 = 98,779.60/x
  3. Step 3: Cross multiply
    169,638.40x = 254,457.60 × 98,779.60
  4. Step 4: Simplify right side
    169,638.40x = 25,135,219,944.96
  5. Step 5: Solve for x
    x = 25,135,219,944.96/169,638.40
  6. Step 6: Final answer
    x = 148,169.40

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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.