Home / 145,221.66-200,396.03-81,558.09

Finding the Fourth Proportional to 145,221.66, 200,396.03 and 81,558.09

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Solution

The fourth proportional to 145,221.66, 200,396.03 and 81,558.09 is: 112,544.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,221.66 : 200,396.03 = 81,558.09 : x
  2. Step 2: Convert to fraction form
    145,221.66/200,396.03 = 81,558.09/x
  3. Step 3: Cross multiply
    145,221.66x = 200,396.03 × 81,558.09
  4. Step 4: Simplify right side
    145,221.66x = 16,343,917,042.59
  5. Step 5: Solve for x
    x = 16,343,917,042.59/145,221.66
  6. Step 6: Final answer
    x = 112,544.62

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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.