Home / 210,645.13-290,690.30-115,152.52

Finding the Fourth Proportional to 210,645.13, 290,690.30 and 115,152.52

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Solution

The fourth proportional to 210,645.13, 290,690.30 and 115,152.52 is: 158,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,645.13 : 290,690.30 = 115,152.52 : x
  2. Step 2: Convert to fraction form
    210,645.13/290,690.30 = 115,152.52/x
  3. Step 3: Cross multiply
    210,645.13x = 290,690.30 × 115,152.52
  4. Step 4: Simplify right side
    210,645.13x = 33,473,720,584.56
  5. Step 5: Solve for x
    x = 33,473,720,584.56/210,645.13
  6. Step 6: Final answer
    x = 158,910.49

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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.