Home / 136,720.50-188,669.82-74,628.60

Finding the Fourth Proportional to 136,720.50, 188,669.82 and 74,628.60

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Solution

The fourth proportional to 136,720.50, 188,669.82 and 74,628.60 is: 102,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,720.50 : 188,669.82 = 74,628.60 : x
  2. Step 2: Convert to fraction form
    136,720.50/188,669.82 = 74,628.60/x
  3. Step 3: Cross multiply
    136,720.50x = 188,669.82 × 74,628.60
  4. Step 4: Simplify right side
    136,720.50x = 14,080,164,528.85
  5. Step 5: Solve for x
    x = 14,080,164,528.85/136,720.50
  6. Step 6: Final answer
    x = 102,985.03

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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.