Home / 145,105.36-200,246.88-81,441.88

Finding the Fourth Proportional to 145,105.36, 200,246.88 and 81,441.88

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Solution

The fourth proportional to 145,105.36, 200,246.88 and 81,441.88 is: 112,390.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,105.36 : 200,246.88 = 81,441.88 : x
  2. Step 2: Convert to fraction form
    145,105.36/200,246.88 = 81,441.88/x
  3. Step 3: Cross multiply
    145,105.36x = 200,246.88 × 81,441.88
  4. Step 4: Simplify right side
    145,105.36x = 16,308,482,371.33
  5. Step 5: Solve for x
    x = 16,308,482,371.33/145,105.36
  6. Step 6: Final answer
    x = 112,390.63

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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.