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Finding the Fourth Proportional to 136,093.74, 187,815.59 and 75,670.57

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Solution

The fourth proportional to 136,093.74, 187,815.59 and 75,670.57 is: 104,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,093.74 : 187,815.59 = 75,670.57 : x
  2. Step 2: Convert to fraction form
    136,093.74/187,815.59 = 75,670.57/x
  3. Step 3: Cross multiply
    136,093.74x = 187,815.59 × 75,670.57
  4. Step 4: Simplify right side
    136,093.74x = 14,212,112,750.19
  5. Step 5: Solve for x
    x = 14,212,112,750.19/136,093.74
  6. Step 6: Final answer
    x = 104,428.85

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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.