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Finding the Fourth Proportional to 145,560.42, 200,871.30 and 81,898.08

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Solution

The fourth proportional to 145,560.42, 200,871.30 and 81,898.08 is: 113,018.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,560.42 : 200,871.30 = 81,898.08 : x
  2. Step 2: Convert to fraction form
    145,560.42/200,871.30 = 81,898.08/x
  3. Step 3: Cross multiply
    145,560.42x = 200,871.30 × 81,898.08
  4. Step 4: Simplify right side
    145,560.42x = 16,450,973,797.10
  5. Step 5: Solve for x
    x = 16,450,973,797.10/145,560.42
  6. Step 6: Final answer
    x = 113,018.18

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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.