Home / 138,940.02-191,736.99-75,279.42

Finding the Fourth Proportional to 138,940.02, 191,736.99 and 75,279.42

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Solution

The fourth proportional to 138,940.02, 191,736.99 and 75,279.42 is: 103,885.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,940.02 : 191,736.99 = 75,279.42 : x
  2. Step 2: Convert to fraction form
    138,940.02/191,736.99 = 75,279.42/x
  3. Step 3: Cross multiply
    138,940.02x = 191,736.99 × 75,279.42
  4. Step 4: Simplify right side
    138,940.02x = 14,433,849,399.75
  5. Step 5: Solve for x
    x = 14,433,849,399.75/138,940.02
  6. Step 6: Final answer
    x = 103,885.47

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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.