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Finding the Fourth Proportional to 124,709.44, 172,043.04 and 76,964.80

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Solution

The fourth proportional to 124,709.44, 172,043.04 and 76,964.80 is: 106,176.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,709.44 : 172,043.04 = 76,964.80 : x
  2. Step 2: Convert to fraction form
    124,709.44/172,043.04 = 76,964.80/x
  3. Step 3: Cross multiply
    124,709.44x = 172,043.04 × 76,964.80
  4. Step 4: Simplify right side
    124,709.44x = 13,241,258,164.99
  5. Step 5: Solve for x
    x = 13,241,258,164.99/124,709.44
  6. Step 6: Final answer
    x = 106,176.87

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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.