Home / 118,591.40-163,715.64-91,673.12

Finding the Fourth Proportional to 118,591.40, 163,715.64 and 91,673.12

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Solution

The fourth proportional to 118,591.40, 163,715.64 and 91,673.12 is: 126,554.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,591.40 : 163,715.64 = 91,673.12 : x
  2. Step 2: Convert to fraction form
    118,591.40/163,715.64 = 91,673.12/x
  3. Step 3: Cross multiply
    118,591.40x = 163,715.64 × 91,673.12
  4. Step 4: Simplify right side
    118,591.40x = 15,008,323,511.60
  5. Step 5: Solve for x
    x = 15,008,323,511.60/118,591.40
  6. Step 6: Final answer
    x = 126,554.91

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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.