Home / 130,669.12-180,301.52-76,964.83

Finding the Fourth Proportional to 130,669.12, 180,301.52 and 76,964.83

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Solution

The fourth proportional to 130,669.12, 180,301.52 and 76,964.83 is: 106,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,669.12 : 180,301.52 = 76,964.83 : x
  2. Step 2: Convert to fraction form
    130,669.12/180,301.52 = 76,964.83/x
  3. Step 3: Cross multiply
    130,669.12x = 180,301.52 × 76,964.83
  4. Step 4: Simplify right side
    130,669.12x = 13,876,874,934.03
  5. Step 5: Solve for x
    x = 13,876,874,934.03/130,669.12
  6. Step 6: Final answer
    x = 106,198.58

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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.