Home / 78,817.10-118,052.85-68,449.10

Finding the Fourth Proportional to 78,817.10, 118,052.85 and 68,449.10

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Solution

The fourth proportional to 78,817.10, 118,052.85 and 68,449.10 is: 102,523.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,817.10 : 118,052.85 = 68,449.10 : x
  2. Step 2: Convert to fraction form
    78,817.10/118,052.85 = 68,449.10/x
  3. Step 3: Cross multiply
    78,817.10x = 118,052.85 × 68,449.10
  4. Step 4: Simplify right side
    78,817.10x = 8,080,611,334.94
  5. Step 5: Solve for x
    x = 8,080,611,334.94/78,817.10
  6. Step 6: Final answer
    x = 102,523.58

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1.5x scale

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.