Home / 115,971.90-159,973.83-65,661.18

Finding the Fourth Proportional to 115,971.90, 159,973.83 and 65,661.18

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Solution

The fourth proportional to 115,971.90, 159,973.83 and 65,661.18 is: 90,574.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,971.90 : 159,973.83 = 65,661.18 : x
  2. Step 2: Convert to fraction form
    115,971.90/159,973.83 = 65,661.18/x
  3. Step 3: Cross multiply
    115,971.90x = 159,973.83 × 65,661.18
  4. Step 4: Simplify right side
    115,971.90x = 10,504,070,446.92
  5. Step 5: Solve for x
    x = 10,504,070,446.92/115,971.90
  6. Step 6: Final answer
    x = 90,574.27

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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.