Home / 74,298.90-111,447.94-18,139.30

Finding the Fourth Proportional to 74,298.90, 111,447.94 and 18,139.30

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Solution

The fourth proportional to 74,298.90, 111,447.94 and 18,139.30 is: 27,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,298.90 : 111,447.94 = 18,139.30 : x
  2. Step 2: Convert to fraction form
    74,298.90/111,447.94 = 18,139.30/x
  3. Step 3: Cross multiply
    74,298.90x = 111,447.94 × 18,139.30
  4. Step 4: Simplify right side
    74,298.90x = 2,021,587,618.04
  5. Step 5: Solve for x
    x = 2,021,587,618.04/74,298.90
  6. Step 6: Final answer
    x = 27,208.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.