Home / 153,743.21-212,165.97-85,764.59

Finding the Fourth Proportional to 153,743.21, 212,165.97 and 85,764.59

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Solution

The fourth proportional to 153,743.21, 212,165.97 and 85,764.59 is: 118,355.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,743.21 : 212,165.97 = 85,764.59 : x
  2. Step 2: Convert to fraction form
    153,743.21/212,165.97 = 85,764.59/x
  3. Step 3: Cross multiply
    153,743.21x = 212,165.97 × 85,764.59
  4. Step 4: Simplify right side
    153,743.21x = 18,196,327,146.85
  5. Step 5: Solve for x
    x = 18,196,327,146.85/153,743.21
  6. Step 6: Final answer
    x = 118,355.32

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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.