Home / 145,059.35-217,588.68-81,850.77

Finding the Fourth Proportional to 145,059.35, 217,588.68 and 81,850.77

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Solution

The fourth proportional to 145,059.35, 217,588.68 and 81,850.77 is: 122,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,059.35 : 217,588.68 = 81,850.77 : x
  2. Step 2: Convert to fraction form
    145,059.35/217,588.68 = 81,850.77/x
  3. Step 3: Cross multiply
    145,059.35x = 217,588.68 × 81,850.77
  4. Step 4: Simplify right side
    145,059.35x = 17,809,801,001.28
  5. Step 5: Solve for x
    x = 17,809,801,001.28/145,059.35
  6. Step 6: Final answer
    x = 122,775.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.