Home / 135,255.84-186,638.16-74,811.36

Finding the Fourth Proportional to 135,255.84, 186,638.16 and 74,811.36

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Solution

The fourth proportional to 135,255.84, 186,638.16 and 74,811.36 is: 103,231.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,255.84 : 186,638.16 = 74,811.36 : x
  2. Step 2: Convert to fraction form
    135,255.84/186,638.16 = 74,811.36/x
  3. Step 3: Cross multiply
    135,255.84x = 186,638.16 × 74,811.36
  4. Step 4: Simplify right side
    135,255.84x = 13,962,654,577.50
  5. Step 5: Solve for x
    x = 13,962,654,577.50/135,255.84
  6. Step 6: Final answer
    x = 103,231.44

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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.