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Finding the Fourth Proportional to 108,919.80, 163,476.90 and 94,145.40

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Solution

The fourth proportional to 108,919.80, 163,476.90 and 94,145.40 is: 141,302.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,919.80 : 163,476.90 = 94,145.40 : x
  2. Step 2: Convert to fraction form
    108,919.80/163,476.90 = 94,145.40/x
  3. Step 3: Cross multiply
    108,919.80x = 163,476.90 × 94,145.40
  4. Step 4: Simplify right side
    108,919.80x = 15,390,598,141.26
  5. Step 5: Solve for x
    x = 15,390,598,141.26/108,919.80
  6. Step 6: Final answer
    x = 141,302.12

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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.