Home / 79,118.10-118,490.04-68,673.42

Finding the Fourth Proportional to 79,118.10, 118,490.04 and 68,673.42

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Solution

The fourth proportional to 79,118.10, 118,490.04 and 68,673.42 is: 102,847.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,118.10 : 118,490.04 = 68,673.42 : x
  2. Step 2: Convert to fraction form
    79,118.10/118,490.04 = 68,673.42/x
  3. Step 3: Cross multiply
    79,118.10x = 118,490.04 × 68,673.42
  4. Step 4: Simplify right side
    79,118.10x = 8,137,116,282.74
  5. Step 5: Solve for x
    x = 8,137,116,282.74/79,118.10
  6. Step 6: Final answer
    x = 102,847.72

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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.