Home / 210,734.85-290,732.79-130,022.40

Finding the Fourth Proportional to 210,734.85, 290,732.79 and 130,022.40

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Solution

The fourth proportional to 210,734.85, 290,732.79 and 130,022.40 is: 179,380.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,734.85 : 290,732.79 = 130,022.40 : x
  2. Step 2: Convert to fraction form
    210,734.85/290,732.79 = 130,022.40/x
  3. Step 3: Cross multiply
    210,734.85x = 290,732.79 × 130,022.40
  4. Step 4: Simplify right side
    210,734.85x = 37,801,775,114.50
  5. Step 5: Solve for x
    x = 37,801,775,114.50/210,734.85
  6. Step 6: Final answer
    x = 179,380.75

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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.