Home / 136,729.12-188,627.94-85,706.98

Finding the Fourth Proportional to 136,729.12, 188,627.94 and 85,706.98

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Solution

The fourth proportional to 136,729.12, 188,627.94 and 85,706.98 is: 118,239.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,729.12 : 188,627.94 = 85,706.98 : x
  2. Step 2: Convert to fraction form
    136,729.12/188,627.94 = 85,706.98/x
  3. Step 3: Cross multiply
    136,729.12x = 188,627.94 × 85,706.98
  4. Step 4: Simplify right side
    136,729.12x = 16,166,731,081.02
  5. Step 5: Solve for x
    x = 16,166,731,081.02/136,729.12
  6. Step 6: Final answer
    x = 118,239.12

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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.