Home / 115,619.62-159,497.76-90,080.32

Finding the Fourth Proportional to 115,619.62, 159,497.76 and 90,080.32

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Solution

The fourth proportional to 115,619.62, 159,497.76 and 90,080.32 is: 124,266.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,619.62 : 159,497.76 = 90,080.32 : x
  2. Step 2: Convert to fraction form
    115,619.62/159,497.76 = 90,080.32/x
  3. Step 3: Cross multiply
    115,619.62x = 159,497.76 × 90,080.32
  4. Step 4: Simplify right side
    115,619.62x = 14,367,609,260.08
  5. Step 5: Solve for x
    x = 14,367,609,260.08/115,619.62
  6. Step 6: Final answer
    x = 124,266.19

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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.