Home / 145,450.72-200,720.67-81,788.97

Finding the Fourth Proportional to 145,450.72, 200,720.67 and 81,788.97

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Solution

The fourth proportional to 145,450.72, 200,720.67 and 81,788.97 is: 112,868.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,450.72 : 200,720.67 = 81,788.97 : x
  2. Step 2: Convert to fraction form
    145,450.72/200,720.67 = 81,788.97/x
  3. Step 3: Cross multiply
    145,450.72x = 200,720.67 × 81,788.97
  4. Step 4: Simplify right side
    145,450.72x = 16,416,737,303.00
  5. Step 5: Solve for x
    x = 16,416,737,303.00/145,450.72
  6. Step 6: Final answer
    x = 112,868.04

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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.