Home / 130,253.67-179,934.21-120,609

Finding the Fourth Proportional to 130,253.67, 179,934.21 and 120,609

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Solution

The fourth proportional to 130,253.67, 179,934.21 and 120,609 is: 166,610.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,253.67 : 179,934.21 = 120,609 : x
  2. Step 2: Convert to fraction form
    130,253.67/179,934.21 = 120,609/x
  3. Step 3: Cross multiply
    130,253.67x = 179,934.21 × 120,609
  4. Step 4: Simplify right side
    130,253.67x = 21,701,685,133.89
  5. Step 5: Solve for x
    x = 21,701,685,133.89/130,253.67
  6. Step 6: Final answer
    x = 166,610.93

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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.