Home / 145,974.21-201,444.30-78,906.21

Finding the Fourth Proportional to 145,974.21, 201,444.30 and 78,906.21

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Solution

The fourth proportional to 145,974.21, 201,444.30 and 78,906.21 is: 108,890.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,974.21 : 201,444.30 = 78,906.21 : x
  2. Step 2: Convert to fraction form
    145,974.21/201,444.30 = 78,906.21/x
  3. Step 3: Cross multiply
    145,974.21x = 201,444.30 × 78,906.21
  4. Step 4: Simplify right side
    145,974.21x = 15,895,206,239.10
  5. Step 5: Solve for x
    x = 15,895,206,239.10/145,974.21
  6. Step 6: Final answer
    x = 108,890.51

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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.