Home / 145,139.76-200,299.52-80,609.26

Finding the Fourth Proportional to 145,139.76, 200,299.52 and 80,609.26

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Solution

The fourth proportional to 145,139.76, 200,299.52 and 80,609.26 is: 111,244.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,139.76 : 200,299.52 = 80,609.26 : x
  2. Step 2: Convert to fraction form
    145,139.76/200,299.52 = 80,609.26/x
  3. Step 3: Cross multiply
    145,139.76x = 200,299.52 × 80,609.26
  4. Step 4: Simplify right side
    145,139.76x = 16,145,996,085.56
  5. Step 5: Solve for x
    x = 16,145,996,085.56/145,139.76
  6. Step 6: Final answer
    x = 111,244.47

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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.