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Finding the Fourth Proportional to 118,461.57, 163,371.11 and 98,286.50

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Solution

The fourth proportional to 118,461.57, 163,371.11 and 98,286.50 is: 135,547.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,461.57 : 163,371.11 = 98,286.50 : x
  2. Step 2: Convert to fraction form
    118,461.57/163,371.11 = 98,286.50/x
  3. Step 3: Cross multiply
    118,461.57x = 163,371.11 × 98,286.50
  4. Step 4: Simplify right side
    118,461.57x = 16,057,173,294.73
  5. Step 5: Solve for x
    x = 16,057,173,294.73/118,461.57
  6. Step 6: Final answer
    x = 135,547.53

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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.