Home / 115,771.36-159,718.80-72,725.56

Finding the Fourth Proportional to 115,771.36, 159,718.80 and 72,725.56

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Solution

The fourth proportional to 115,771.36, 159,718.80 and 72,725.56 is: 100,332.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,771.36 : 159,718.80 = 72,725.56 : x
  2. Step 2: Convert to fraction form
    115,771.36/159,718.80 = 72,725.56/x
  3. Step 3: Cross multiply
    115,771.36x = 159,718.80 × 72,725.56
  4. Step 4: Simplify right side
    115,771.36x = 11,615,639,172.53
  5. Step 5: Solve for x
    x = 11,615,639,172.53/115,771.36
  6. Step 6: Final answer
    x = 100,332.58

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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.