Home / 168,854.96-253,343.16-78,977.84

Finding the Fourth Proportional to 168,854.96, 253,343.16 and 78,977.84

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Solution

The fourth proportional to 168,854.96, 253,343.16 and 78,977.84 is: 118,495.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,854.96 : 253,343.16 = 78,977.84 : x
  2. Step 2: Convert to fraction form
    168,854.96/253,343.16 = 78,977.84/x
  3. Step 3: Cross multiply
    168,854.96x = 253,343.16 × 78,977.84
  4. Step 4: Simplify right side
    168,854.96x = 20,008,495,555.57
  5. Step 5: Solve for x
    x = 20,008,495,555.57/168,854.96
  6. Step 6: Final answer
    x = 118,495.16

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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.