Home / 115,705.14-159,668.73-65,405.22

Finding the Fourth Proportional to 115,705.14, 159,668.73 and 65,405.22

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Solution

The fourth proportional to 115,705.14, 159,668.73 and 65,405.22 is: 90,256.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,705.14 : 159,668.73 = 65,405.22 : x
  2. Step 2: Convert to fraction form
    115,705.14/159,668.73 = 65,405.22/x
  3. Step 3: Cross multiply
    115,705.14x = 159,668.73 × 65,405.22
  4. Step 4: Simplify right side
    115,705.14x = 10,443,168,412.77
  5. Step 5: Solve for x
    x = 10,443,168,412.77/115,705.14
  6. Step 6: Final answer
    x = 90,256.74

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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.