Home / 153,270.12-211,512.92-85,293.28

Finding the Fourth Proportional to 153,270.12, 211,512.92 and 85,293.28

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Solution

The fourth proportional to 153,270.12, 211,512.92 and 85,293.28 is: 117,704.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,270.12 : 211,512.92 = 85,293.28 : x
  2. Step 2: Convert to fraction form
    153,270.12/211,512.92 = 85,293.28/x
  3. Step 3: Cross multiply
    153,270.12x = 211,512.92 × 85,293.28
  4. Step 4: Simplify right side
    153,270.12x = 18,040,630,709.18
  5. Step 5: Solve for x
    x = 18,040,630,709.18/153,270.12
  6. Step 6: Final answer
    x = 117,704.81

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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.