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Finding the Fourth Proportional to 135,347.58, 186,780.02 and 74,922.39

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Solution

The fourth proportional to 135,347.58, 186,780.02 and 74,922.39 is: 103,393.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,347.58 : 186,780.02 = 74,922.39 : x
  2. Step 2: Convert to fraction form
    135,347.58/186,780.02 = 74,922.39/x
  3. Step 3: Cross multiply
    135,347.58x = 186,780.02 × 74,922.39
  4. Step 4: Simplify right side
    135,347.58x = 13,994,005,128.04
  5. Step 5: Solve for x
    x = 13,994,005,128.04/135,347.58
  6. Step 6: Final answer
    x = 103,393.09

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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.