Home / 123,401.45-170,305.41-74,992.20

Finding the Fourth Proportional to 123,401.45, 170,305.41 and 74,992.20

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Solution

The fourth proportional to 123,401.45, 170,305.41 and 74,992.20 is: 103,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,401.45 : 170,305.41 = 74,992.20 : x
  2. Step 2: Convert to fraction form
    123,401.45/170,305.41 = 74,992.20/x
  3. Step 3: Cross multiply
    123,401.45x = 170,305.41 × 74,992.20
  4. Step 4: Simplify right side
    123,401.45x = 12,771,577,274.06
  5. Step 5: Solve for x
    x = 12,771,577,274.06/123,401.45
  6. Step 6: Final answer
    x = 103,496.17

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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.