Home / 141,965.13-213,256.94-85,831.70

Finding the Fourth Proportional to 141,965.13, 213,256.94 and 85,831.70

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Solution

The fourth proportional to 141,965.13, 213,256.94 and 85,831.70 is: 128,934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,965.13 : 213,256.94 = 85,831.70 : x
  2. Step 2: Convert to fraction form
    141,965.13/213,256.94 = 85,831.70/x
  3. Step 3: Cross multiply
    141,965.13x = 213,256.94 × 85,831.70
  4. Step 4: Simplify right side
    141,965.13x = 18,304,204,201.55
  5. Step 5: Solve for x
    x = 18,304,204,201.55/141,965.13
  6. Step 6: Final answer
    x = 128,934.50

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1.5x scale

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.