Home / 142,373.13-196,468.68-81,945.71

Finding the Fourth Proportional to 142,373.13, 196,468.68 and 81,945.71

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Solution

The fourth proportional to 142,373.13, 196,468.68 and 81,945.71 is: 113,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,373.13 : 196,468.68 = 81,945.71 : x
  2. Step 2: Convert to fraction form
    142,373.13/196,468.68 = 81,945.71/x
  3. Step 3: Cross multiply
    142,373.13x = 196,468.68 × 81,945.71
  4. Step 4: Simplify right side
    142,373.13x = 16,099,765,537.07
  5. Step 5: Solve for x
    x = 16,099,765,537.07/142,373.13
  6. Step 6: Final answer
    x = 113,081.49

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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.