Home / 145,623.60-200,960.13-81,961.38

Finding the Fourth Proportional to 145,623.60, 200,960.13 and 81,961.38

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Solution

The fourth proportional to 145,623.60, 200,960.13 and 81,961.38 is: 113,106.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,623.60 : 200,960.13 = 81,961.38 : x
  2. Step 2: Convert to fraction form
    145,623.60/200,960.13 = 81,961.38/x
  3. Step 3: Cross multiply
    145,623.60x = 200,960.13 × 81,961.38
  4. Step 4: Simplify right side
    145,623.60x = 16,470,969,579.78
  5. Step 5: Solve for x
    x = 16,470,969,579.78/145,623.60
  6. Step 6: Final answer
    x = 113,106.46

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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.