Home / 78,214.82-117,322.20-67,653.45

Finding the Fourth Proportional to 78,214.82, 117,322.20 and 67,653.45

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Solution

The fourth proportional to 78,214.82, 117,322.20 and 67,653.45 is: 101,480.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,214.82 : 117,322.20 = 67,653.45 : x
  2. Step 2: Convert to fraction form
    78,214.82/117,322.20 = 67,653.45/x
  3. Step 3: Cross multiply
    78,214.82x = 117,322.20 × 67,653.45
  4. Step 4: Simplify right side
    78,214.82x = 7,937,251,591.59
  5. Step 5: Solve for x
    x = 7,937,251,591.59/78,214.82
  6. Step 6: Final answer
    x = 101,480.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.