Home / 205,013.10-307,519.65-125,870.70

Finding the Fourth Proportional to 205,013.10, 307,519.65 and 125,870.70

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Solution

The fourth proportional to 205,013.10, 307,519.65 and 125,870.70 is: 188,806.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,013.10 : 307,519.65 = 125,870.70 : x
  2. Step 2: Convert to fraction form
    205,013.10/307,519.65 = 125,870.70/x
  3. Step 3: Cross multiply
    205,013.10x = 307,519.65 × 125,870.70
  4. Step 4: Simplify right side
    205,013.10x = 38,707,713,609.26
  5. Step 5: Solve for x
    x = 38,707,713,609.26/205,013.10
  6. Step 6: Final answer
    x = 188,806.05

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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.