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Finding the Fourth Proportional to 136,567.76, 188,493.75 and 88,738.07

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Solution

The fourth proportional to 136,567.76, 188,493.75 and 88,738.07 is: 122,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,567.76 : 188,493.75 = 88,738.07 : x
  2. Step 2: Convert to fraction form
    136,567.76/188,493.75 = 88,738.07/x
  3. Step 3: Cross multiply
    136,567.76x = 188,493.75 × 88,738.07
  4. Step 4: Simplify right side
    136,567.76x = 16,726,570,639.59
  5. Step 5: Solve for x
    x = 16,726,570,639.59/136,567.76
  6. Step 6: Final answer
    x = 122,478.18

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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.