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Finding the Fourth Proportional to 153,245.52, 211,475.52 and 85,261.14

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Solution

The fourth proportional to 153,245.52, 211,475.52 and 85,261.14 is: 117,658.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,245.52 : 211,475.52 = 85,261.14 : x
  2. Step 2: Convert to fraction form
    153,245.52/211,475.52 = 85,261.14/x
  3. Step 3: Cross multiply
    153,245.52x = 211,475.52 × 85,261.14
  4. Step 4: Simplify right side
    153,245.52x = 18,030,643,917.29
  5. Step 5: Solve for x
    x = 18,030,643,917.29/153,245.52
  6. Step 6: Final answer
    x = 117,658.54

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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.