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Finding the Fourth Proportional to 153,594.33, 211,961.17 and 85,615.62

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Solution

The fourth proportional to 153,594.33, 211,961.17 and 85,615.62 is: 118,150.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,594.33 : 211,961.17 = 85,615.62 : x
  2. Step 2: Convert to fraction form
    153,594.33/211,961.17 = 85,615.62/x
  3. Step 3: Cross multiply
    153,594.33x = 211,961.17 × 85,615.62
  4. Step 4: Simplify right side
    153,594.33x = 18,147,186,297.64
  5. Step 5: Solve for x
    x = 18,147,186,297.64/153,594.33
  6. Step 6: Final answer
    x = 118,150.11

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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.