Home / 209,146.38-313,718.78-59,386.68

Finding the Fourth Proportional to 209,146.38, 313,718.78 and 59,386.68

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Solution

The fourth proportional to 209,146.38, 313,718.78 and 59,386.68 is: 89,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,146.38 : 313,718.78 = 59,386.68 : x
  2. Step 2: Convert to fraction form
    209,146.38/313,718.78 = 59,386.68/x
  3. Step 3: Cross multiply
    209,146.38x = 313,718.78 × 59,386.68
  4. Step 4: Simplify right side
    209,146.38x = 18,630,716,797.85
  5. Step 5: Solve for x
    x = 18,630,716,797.85/209,146.38
  6. Step 6: Final answer
    x = 89,079.80

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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.