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Finding the Fourth Proportional to 134,863.20, 202,221.90 and 55,985.40

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Solution

The fourth proportional to 134,863.20, 202,221.90 and 55,985.40 is: 83,947.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,863.20 : 202,221.90 = 55,985.40 : x
  2. Step 2: Convert to fraction form
    134,863.20/202,221.90 = 55,985.40/x
  3. Step 3: Cross multiply
    134,863.20x = 202,221.90 × 55,985.40
  4. Step 4: Simplify right side
    134,863.20x = 11,321,473,960.26
  5. Step 5: Solve for x
    x = 11,321,473,960.26/134,863.20
  6. Step 6: Final answer
    x = 83,947.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.