Home / 74,134.12-111,201.18-18,730.12

Finding the Fourth Proportional to 74,134.12, 111,201.18 and 18,730.12

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Solution

The fourth proportional to 74,134.12, 111,201.18 and 18,730.12 is: 28,095.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,134.12 : 111,201.18 = 18,730.12 : x
  2. Step 2: Convert to fraction form
    74,134.12/111,201.18 = 18,730.12/x
  3. Step 3: Cross multiply
    74,134.12x = 111,201.18 × 18,730.12
  4. Step 4: Simplify right side
    74,134.12x = 2,082,811,445.54
  5. Step 5: Solve for x
    x = 2,082,811,445.54/74,134.12
  6. Step 6: Final answer
    x = 28,095.18

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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.