Home / 142,720.63-196,767.77-122,791.59

Finding the Fourth Proportional to 142,720.63, 196,767.77 and 122,791.59

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Solution

The fourth proportional to 142,720.63, 196,767.77 and 122,791.59 is: 169,291.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.63 : 196,767.77 = 122,791.59 : x
  2. Step 2: Convert to fraction form
    142,720.63/196,767.77 = 122,791.59/x
  3. Step 3: Cross multiply
    142,720.63x = 196,767.77 × 122,791.59
  4. Step 4: Simplify right side
    142,720.63x = 24,161,426,725.10
  5. Step 5: Solve for x
    x = 24,161,426,725.10/142,720.63
  6. Step 6: Final answer
    x = 169,291.76

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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.