Home / 142,322.12-196,402.74-77,791.04

Finding the Fourth Proportional to 142,322.12, 196,402.74 and 77,791.04

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Solution

The fourth proportional to 142,322.12, 196,402.74 and 77,791.04 is: 107,350.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,322.12 : 196,402.74 = 77,791.04 : x
  2. Step 2: Convert to fraction form
    142,322.12/196,402.74 = 77,791.04/x
  3. Step 3: Cross multiply
    142,322.12x = 196,402.74 × 77,791.04
  4. Step 4: Simplify right side
    142,322.12x = 15,278,373,403.45
  5. Step 5: Solve for x
    x = 15,278,373,403.45/142,322.12
  6. Step 6: Final answer
    x = 107,350.66

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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.