Home / 74,159.84-111,238.81-18,000.38

Finding the Fourth Proportional to 74,159.84, 111,238.81 and 18,000.38

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Solution

The fourth proportional to 74,159.84, 111,238.81 and 18,000.38 is: 27,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,159.84 : 111,238.81 = 18,000.38 : x
  2. Step 2: Convert to fraction form
    74,159.84/111,238.81 = 18,000.38/x
  3. Step 3: Cross multiply
    74,159.84x = 111,238.81 × 18,000.38
  4. Step 4: Simplify right side
    74,159.84x = 2,002,340,204.55
  5. Step 5: Solve for x
    x = 2,002,340,204.55/74,159.84
  6. Step 6: Final answer
    x = 27,000.33

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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.