Home / 142,365.39-196,447.14-78,694.53

Finding the Fourth Proportional to 142,365.39, 196,447.14 and 78,694.53

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Solution

The fourth proportional to 142,365.39, 196,447.14 and 78,694.53 is: 108,589.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,365.39 : 196,447.14 = 78,694.53 : x
  2. Step 2: Convert to fraction form
    142,365.39/196,447.14 = 78,694.53/x
  3. Step 3: Cross multiply
    142,365.39x = 196,447.14 × 78,694.53
  4. Step 4: Simplify right side
    142,365.39x = 15,459,315,352.14
  5. Step 5: Solve for x
    x = 15,459,315,352.14/142,365.39
  6. Step 6: Final answer
    x = 108,589.00

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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.