Home / 117,939.60-176,952.06-72,908.28

Finding the Fourth Proportional to 117,939.60, 176,952.06 and 72,908.28

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Solution

The fourth proportional to 117,939.60, 176,952.06 and 72,908.28 is: 109,388.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,939.60 : 176,952.06 = 72,908.28 : x
  2. Step 2: Convert to fraction form
    117,939.60/176,952.06 = 72,908.28/x
  3. Step 3: Cross multiply
    117,939.60x = 176,952.06 × 72,908.28
  4. Step 4: Simplify right side
    117,939.60x = 12,901,270,337.06
  5. Step 5: Solve for x
    x = 12,901,270,337.06/117,939.60
  6. Step 6: Final answer
    x = 109,388.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.