Home / 210,686.19-290,744.96-115,191.87

Finding the Fourth Proportional to 210,686.19, 290,744.96 and 115,191.87

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Solution

The fourth proportional to 210,686.19, 290,744.96 and 115,191.87 is: 158,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,686.19 : 290,744.96 = 115,191.87 : x
  2. Step 2: Convert to fraction form
    210,686.19/290,744.96 = 115,191.87/x
  3. Step 3: Cross multiply
    210,686.19x = 290,744.96 × 115,191.87
  4. Step 4: Simplify right side
    210,686.19x = 33,491,455,059.52
  5. Step 5: Solve for x
    x = 33,491,455,059.52/210,686.19
  6. Step 6: Final answer
    x = 158,963.69

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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.