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Finding the Fourth Proportional to 136,655.22, 188,702.92 and 85,756.22

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Solution

The fourth proportional to 136,655.22, 188,702.92 and 85,756.22 is: 118,418.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,655.22 : 188,702.92 = 85,756.22 : x
  2. Step 2: Convert to fraction form
    136,655.22/188,702.92 = 85,756.22/x
  3. Step 3: Cross multiply
    136,655.22x = 188,702.92 × 85,756.22
  4. Step 4: Simplify right side
    136,655.22x = 16,182,449,122.16
  5. Step 5: Solve for x
    x = 16,182,449,122.16/136,655.22
  6. Step 6: Final answer
    x = 118,418.08

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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.