Home / 136,725.12-188,622.42-85,702.98

Finding the Fourth Proportional to 136,725.12, 188,622.42 and 85,702.98

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Solution

The fourth proportional to 136,725.12, 188,622.42 and 85,702.98 is: 118,233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,725.12 : 188,622.42 = 85,702.98 : x
  2. Step 2: Convert to fraction form
    136,725.12/188,622.42 = 85,702.98/x
  3. Step 3: Cross multiply
    136,725.12x = 188,622.42 × 85,702.98
  4. Step 4: Simplify right side
    136,725.12x = 16,165,503,488.81
  5. Step 5: Solve for x
    x = 16,165,503,488.81/136,725.12
  6. Step 6: Final answer
    x = 118,233.60

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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.