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Finding the Fourth Proportional to 131,898.89, 182,020.19 and 71,471.18

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Solution

The fourth proportional to 131,898.89, 182,020.19 and 71,471.18 is: 98,630.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,898.89 : 182,020.19 = 71,471.18 : x
  2. Step 2: Convert to fraction form
    131,898.89/182,020.19 = 71,471.18/x
  3. Step 3: Cross multiply
    131,898.89x = 182,020.19 × 71,471.18
  4. Step 4: Simplify right side
    131,898.89x = 13,009,197,860.82
  5. Step 5: Solve for x
    x = 13,009,197,860.82/131,898.89
  6. Step 6: Final answer
    x = 98,630.08

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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.