Home / 145,817.12-201,227.58-78,749.12

Finding the Fourth Proportional to 145,817.12, 201,227.58 and 78,749.12

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Solution

The fourth proportional to 145,817.12, 201,227.58 and 78,749.12 is: 108,673.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,817.12 : 201,227.58 = 78,749.12 : x
  2. Step 2: Convert to fraction form
    145,817.12/201,227.58 = 78,749.12/x
  3. Step 3: Cross multiply
    145,817.12x = 201,227.58 × 78,749.12
  4. Step 4: Simplify right side
    145,817.12x = 15,846,494,844.73
  5. Step 5: Solve for x
    x = 15,846,494,844.73/145,817.12
  6. Step 6: Final answer
    x = 108,673.76

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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.