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Finding the Fourth Proportional to 136,099.58, 187,821.76 and 75,672.77

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Solution

The fourth proportional to 136,099.58, 187,821.76 and 75,672.77 is: 104,430.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,099.58 : 187,821.76 = 75,672.77 : x
  2. Step 2: Convert to fraction form
    136,099.58/187,821.76 = 75,672.77/x
  3. Step 3: Cross multiply
    136,099.58x = 187,821.76 × 75,672.77
  4. Step 4: Simplify right side
    136,099.58x = 14,212,992,845.48
  5. Step 5: Solve for x
    x = 14,212,992,845.48/136,099.58
  6. Step 6: Final answer
    x = 104,430.84

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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.