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Finding the Fourth Proportional to 130,389.65, 179,917.16 and 75,950.79

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Solution

The fourth proportional to 130,389.65, 179,917.16 and 75,950.79 is: 104,800.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,389.65 : 179,917.16 = 75,950.79 : x
  2. Step 2: Convert to fraction form
    130,389.65/179,917.16 = 75,950.79/x
  3. Step 3: Cross multiply
    130,389.65x = 179,917.16 × 75,950.79
  4. Step 4: Simplify right side
    130,389.65x = 13,664,850,436.56
  5. Step 5: Solve for x
    x = 13,664,850,436.56/130,389.65
  6. Step 6: Final answer
    x = 104,800.12

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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.