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Finding the Fourth Proportional to 145,560.67, 200,871.45 and 81,898.63

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Solution

The fourth proportional to 145,560.67, 200,871.45 and 81,898.63 is: 113,018.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,560.67 : 200,871.45 = 81,898.63 : x
  2. Step 2: Convert to fraction form
    145,560.67/200,871.45 = 81,898.63/x
  3. Step 3: Cross multiply
    145,560.67x = 200,871.45 × 81,898.63
  4. Step 4: Simplify right side
    145,560.67x = 16,451,096,058.93
  5. Step 5: Solve for x
    x = 16,451,096,058.93/145,560.67
  6. Step 6: Final answer
    x = 113,018.83

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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.