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Finding the Fourth Proportional to 145,935.34, 201,371.12 and 84,679.90

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Solution

The fourth proportional to 145,935.34, 201,371.12 and 84,679.90 is: 116,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,935.34 : 201,371.12 = 84,679.90 : x
  2. Step 2: Convert to fraction form
    145,935.34/201,371.12 = 84,679.90/x
  3. Step 3: Cross multiply
    145,935.34x = 201,371.12 × 84,679.90
  4. Step 4: Simplify right side
    145,935.34x = 17,052,086,304.49
  5. Step 5: Solve for x
    x = 17,052,086,304.49/145,935.34
  6. Step 6: Final answer
    x = 116,846.86

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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.