Home / 120,145.17-165,786.23-66,426.98

Finding the Fourth Proportional to 120,145.17, 165,786.23 and 66,426.98

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Solution

The fourth proportional to 120,145.17, 165,786.23 and 66,426.98 is: 91,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,145.17 : 165,786.23 = 66,426.98 : x
  2. Step 2: Convert to fraction form
    120,145.17/165,786.23 = 66,426.98/x
  3. Step 3: Cross multiply
    120,145.17x = 165,786.23 × 66,426.98
  4. Step 4: Simplify right side
    120,145.17x = 11,012,678,252.35
  5. Step 5: Solve for x
    x = 11,012,678,252.35/120,145.17
  6. Step 6: Final answer
    x = 91,661.43

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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.