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Finding the Fourth Proportional to 153,027.77, 211,174.11 and 85,043.03

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Solution

The fourth proportional to 153,027.77, 211,174.11 and 85,043.03 is: 117,357.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,027.77 : 211,174.11 = 85,043.03 : x
  2. Step 2: Convert to fraction form
    153,027.77/211,174.11 = 85,043.03/x
  3. Step 3: Cross multiply
    153,027.77x = 211,174.11 × 85,043.03
  4. Step 4: Simplify right side
    153,027.77x = 17,958,885,116.08
  5. Step 5: Solve for x
    x = 17,958,885,116.08/153,027.77
  6. Step 6: Final answer
    x = 117,357.04

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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.