Home / 211,023.81-316,561.75-68,831.07

Finding the Fourth Proportional to 211,023.81, 316,561.75 and 68,831.07

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Solution

The fourth proportional to 211,023.81, 316,561.75 and 68,831.07 is: 103,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,023.81 : 316,561.75 = 68,831.07 : x
  2. Step 2: Convert to fraction form
    211,023.81/316,561.75 = 68,831.07/x
  3. Step 3: Cross multiply
    211,023.81x = 316,561.75 × 68,831.07
  4. Step 4: Simplify right side
    211,023.81x = 21,789,284,330.52
  5. Step 5: Solve for x
    x = 21,789,284,330.52/211,023.81
  6. Step 6: Final answer
    x = 103,255.10

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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.