Home / 74,145.12-111,217.68-18,741.12

Finding the Fourth Proportional to 74,145.12, 111,217.68 and 18,741.12

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Solution

The fourth proportional to 74,145.12, 111,217.68 and 18,741.12 is: 28,111.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,145.12 : 111,217.68 = 18,741.12 : x
  2. Step 2: Convert to fraction form
    74,145.12/111,217.68 = 18,741.12/x
  3. Step 3: Cross multiply
    74,145.12x = 111,217.68 × 18,741.12
  4. Step 4: Simplify right side
    74,145.12x = 2,084,343,887.00
  5. Step 5: Solve for x
    x = 2,084,343,887.00/74,145.12
  6. Step 6: Final answer
    x = 28,111.68

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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.