Home / 211,128.93-316,697.45-68,974.61

Finding the Fourth Proportional to 211,128.93, 316,697.45 and 68,974.61

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Solution

The fourth proportional to 211,128.93, 316,697.45 and 68,974.61 is: 103,463.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,128.93 : 316,697.45 = 68,974.61 : x
  2. Step 2: Convert to fraction form
    211,128.93/316,697.45 = 68,974.61/x
  3. Step 3: Cross multiply
    211,128.93x = 316,697.45 × 68,974.61
  4. Step 4: Simplify right side
    211,128.93x = 21,844,081,173.38
  5. Step 5: Solve for x
    x = 21,844,081,173.38/211,128.93
  6. Step 6: Final answer
    x = 103,463.23

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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.