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Finding the Fourth Proportional to 136,799.86, 188,775.95 and 76,374.33

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Solution

The fourth proportional to 136,799.86, 188,775.95 and 76,374.33 is: 105,392.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,799.86 : 188,775.95 = 76,374.33 : x
  2. Step 2: Convert to fraction form
    136,799.86/188,775.95 = 76,374.33/x
  3. Step 3: Cross multiply
    136,799.86x = 188,775.95 × 76,374.33
  4. Step 4: Simplify right side
    136,799.86x = 14,417,636,701.36
  5. Step 5: Solve for x
    x = 14,417,636,701.36/136,799.86
  6. Step 6: Final answer
    x = 105,392.19

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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.