Home / 138,934.53-191,733.26-85,188.60

Finding the Fourth Proportional to 138,934.53, 191,733.26 and 85,188.60

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Solution

The fourth proportional to 138,934.53, 191,733.26 and 85,188.60 is: 117,562.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,934.53 : 191,733.26 = 85,188.60 : x
  2. Step 2: Convert to fraction form
    138,934.53/191,733.26 = 85,188.60/x
  3. Step 3: Cross multiply
    138,934.53x = 191,733.26 × 85,188.60
  4. Step 4: Simplify right side
    138,934.53x = 16,333,487,566.89
  5. Step 5: Solve for x
    x = 16,333,487,566.89/138,934.53
  6. Step 6: Final answer
    x = 117,562.48

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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.