Home / 143,633.55-198,222.48-86,290.41

Finding the Fourth Proportional to 143,633.55, 198,222.48 and 86,290.41

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Solution

The fourth proportional to 143,633.55, 198,222.48 and 86,290.41 is: 119,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,633.55 : 198,222.48 = 86,290.41 : x
  2. Step 2: Convert to fraction form
    143,633.55/198,222.48 = 86,290.41/x
  3. Step 3: Cross multiply
    143,633.55x = 198,222.48 × 86,290.41
  4. Step 4: Simplify right side
    143,633.55x = 17,104,698,638.96
  5. Step 5: Solve for x
    x = 17,104,698,638.96/143,633.55
  6. Step 6: Final answer
    x = 119,085.68

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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.