Home / 145,036.80-200,149.26-80,506.61

Finding the Fourth Proportional to 145,036.80, 200,149.26 and 80,506.61

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Solution

The fourth proportional to 145,036.80, 200,149.26 and 80,506.61 is: 111,098.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,036.80 : 200,149.26 = 80,506.61 : x
  2. Step 2: Convert to fraction form
    145,036.80/200,149.26 = 80,506.61/x
  3. Step 3: Cross multiply
    145,036.80x = 200,149.26 × 80,506.61
  4. Step 4: Simplify right side
    145,036.80x = 16,113,338,624.28
  5. Step 5: Solve for x
    x = 16,113,338,624.28/145,036.80
  6. Step 6: Final answer
    x = 111,098.28

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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.