Home / 102,069.10-140,924.10-91,280.44

Finding the Fourth Proportional to 102,069.10, 140,924.10 and 91,280.44

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Solution

The fourth proportional to 102,069.10, 140,924.10 and 91,280.44 is: 126,028.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,069.10 : 140,924.10 = 91,280.44 : x
  2. Step 2: Convert to fraction form
    102,069.10/140,924.10 = 91,280.44/x
  3. Step 3: Cross multiply
    102,069.10x = 140,924.10 × 91,280.44
  4. Step 4: Simplify right side
    102,069.10x = 12,863,613,854.60
  5. Step 5: Solve for x
    x = 12,863,613,854.60/102,069.10
  6. Step 6: Final answer
    x = 126,028.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.