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Finding the Fourth Proportional to 153,596.88, 211,958.64 and 85,610.88

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Solution

The fourth proportional to 153,596.88, 211,958.64 and 85,610.88 is: 118,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,596.88 : 211,958.64 = 85,610.88 : x
  2. Step 2: Convert to fraction form
    153,596.88/211,958.64 = 85,610.88/x
  3. Step 3: Cross multiply
    153,596.88x = 211,958.64 × 85,610.88
  4. Step 4: Simplify right side
    153,596.88x = 18,145,965,694.00
  5. Step 5: Solve for x
    x = 18,145,965,694.00/153,596.88
  6. Step 6: Final answer
    x = 118,140.20

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1.5x scale

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.