Home / 145,030.90-200,139.53-80,496.37

Finding the Fourth Proportional to 145,030.90, 200,139.53 and 80,496.37

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Solution

The fourth proportional to 145,030.90, 200,139.53 and 80,496.37 is: 111,083.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,030.90 : 200,139.53 = 80,496.37 : x
  2. Step 2: Convert to fraction form
    145,030.90/200,139.53 = 80,496.37/x
  3. Step 3: Cross multiply
    145,030.90x = 200,139.53 × 80,496.37
  4. Step 4: Simplify right side
    145,030.90x = 16,110,504,380.41
  5. Step 5: Solve for x
    x = 16,110,504,380.41/145,030.90
  6. Step 6: Final answer
    x = 111,083.26

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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.