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Finding the Fourth Proportional to 153,898.88, 211,906.72 and 131,186.96

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Solution

The fourth proportional to 153,898.88, 211,906.72 and 131,186.96 is: 180,634.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,898.88 : 211,906.72 = 131,186.96 : x
  2. Step 2: Convert to fraction form
    153,898.88/211,906.72 = 131,186.96/x
  3. Step 3: Cross multiply
    153,898.88x = 211,906.72 × 131,186.96
  4. Step 4: Simplify right side
    153,898.88x = 27,799,398,400.37
  5. Step 5: Solve for x
    x = 27,799,398,400.37/153,898.88
  6. Step 6: Final answer
    x = 180,634.18

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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.