Home / 100,230.02-138,284.88-68,343.56

Finding the Fourth Proportional to 100,230.02, 138,284.88 and 68,343.56

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Solution

The fourth proportional to 100,230.02, 138,284.88 and 68,343.56 is: 94,291.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,230.02 : 138,284.88 = 68,343.56 : x
  2. Step 2: Convert to fraction form
    100,230.02/138,284.88 = 68,343.56/x
  3. Step 3: Cross multiply
    100,230.02x = 138,284.88 × 68,343.56
  4. Step 4: Simplify right side
    100,230.02x = 9,450,880,993.37
  5. Step 5: Solve for x
    x = 9,450,880,993.37/100,230.02
  6. Step 6: Final answer
    x = 94,291.92

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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.