Home / 210,791.12-290,885.70-115,295.72

Finding the Fourth Proportional to 210,791.12, 290,885.70 and 115,295.72

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Solution

The fourth proportional to 210,791.12, 290,885.70 and 115,295.72 is: 159,104.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,791.12 : 290,885.70 = 115,295.72 : x
  2. Step 2: Convert to fraction form
    210,791.12/290,885.70 = 115,295.72/x
  3. Step 3: Cross multiply
    210,791.12x = 290,885.70 × 115,295.72
  4. Step 4: Simplify right side
    210,791.12x = 33,537,876,219.20
  5. Step 5: Solve for x
    x = 33,537,876,219.20/210,791.12
  6. Step 6: Final answer
    x = 159,104.79

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1.5x scale

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.