Home / 210,643.13-290,687.54-115,150.52

Finding the Fourth Proportional to 210,643.13, 290,687.54 and 115,150.52

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Solution

The fourth proportional to 210,643.13, 290,687.54 and 115,150.52 is: 158,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,643.13 : 290,687.54 = 115,150.52 : x
  2. Step 2: Convert to fraction form
    210,643.13/290,687.54 = 115,150.52/x
  3. Step 3: Cross multiply
    210,643.13x = 290,687.54 × 115,150.52
  4. Step 4: Simplify right side
    210,643.13x = 33,472,819,359.33
  5. Step 5: Solve for x
    x = 33,472,819,359.33/210,643.13
  6. Step 6: Final answer
    x = 158,907.72

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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.