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Finding the Fourth Proportional to 136,500.78, 188,460.64 and 88,124.34

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Solution

The fourth proportional to 136,500.78, 188,460.64 and 88,124.34 is: 121,669.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,500.78 : 188,460.64 = 88,124.34 : x
  2. Step 2: Convert to fraction form
    136,500.78/188,460.64 = 88,124.34/x
  3. Step 3: Cross multiply
    136,500.78x = 188,460.64 × 88,124.34
  4. Step 4: Simplify right side
    136,500.78x = 16,607,969,515.98
  5. Step 5: Solve for x
    x = 16,607,969,515.98/136,500.78
  6. Step 6: Final answer
    x = 121,669.41

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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.