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Finding the Fourth Proportional to 153,504.40, 211,821.60 and 85,514.44

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Solution

The fourth proportional to 153,504.40, 211,821.60 and 85,514.44 is: 118,001.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,504.40 : 211,821.60 = 85,514.44 : x
  2. Step 2: Convert to fraction form
    153,504.40/211,821.60 = 85,514.44/x
  3. Step 3: Cross multiply
    153,504.40x = 211,821.60 × 85,514.44
  4. Step 4: Simplify right side
    153,504.40x = 18,113,805,503.90
  5. Step 5: Solve for x
    x = 18,113,805,503.90/153,504.40
  6. Step 6: Final answer
    x = 118,001.87

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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.