Home / 219,250.80-328,735.26-86,145.12

Finding the Fourth Proportional to 219,250.80, 328,735.26 and 86,145.12

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Solution

The fourth proportional to 219,250.80, 328,735.26 and 86,145.12 is: 129,162.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,250.80 : 328,735.26 = 86,145.12 : x
  2. Step 2: Convert to fraction form
    219,250.80/328,735.26 = 86,145.12/x
  3. Step 3: Cross multiply
    219,250.80x = 328,735.26 × 86,145.12
  4. Step 4: Simplify right side
    219,250.80x = 28,318,938,420.93
  5. Step 5: Solve for x
    x = 28,318,938,420.93/219,250.80
  6. Step 6: Final answer
    x = 129,162.30

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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.