Home / 141,564.15-195,366.95-81,138.68

Finding the Fourth Proportional to 141,564.15, 195,366.95 and 81,138.68

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Solution

The fourth proportional to 141,564.15, 195,366.95 and 81,138.68 is: 111,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,564.15 : 195,366.95 = 81,138.68 : x
  2. Step 2: Convert to fraction form
    141,564.15/195,366.95 = 81,138.68/x
  3. Step 3: Cross multiply
    141,564.15x = 195,366.95 × 81,138.68
  4. Step 4: Simplify right side
    141,564.15x = 15,851,816,438.63
  5. Step 5: Solve for x
    x = 15,851,816,438.63/141,564.15
  6. Step 6: Final answer
    x = 111,976.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.