Home / 115,146.50-158,936.38-72,733.28

Finding the Fourth Proportional to 115,146.50, 158,936.38 and 72,733.28

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Solution

The fourth proportional to 115,146.50, 158,936.38 and 72,733.28 is: 100,393.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,146.50 : 158,936.38 = 72,733.28 : x
  2. Step 2: Convert to fraction form
    115,146.50/158,936.38 = 72,733.28/x
  3. Step 3: Cross multiply
    115,146.50x = 158,936.38 × 72,733.28
  4. Step 4: Simplify right side
    115,146.50x = 11,559,963,252.21
  5. Step 5: Solve for x
    x = 11,559,963,252.21/115,146.50
  6. Step 6: Final answer
    x = 100,393.53

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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.