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Finding the Fourth Proportional to 94,241.70, 141,362.55 and 81,411.30

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Solution

The fourth proportional to 94,241.70, 141,362.55 and 81,411.30 is: 122,116.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,241.70 : 141,362.55 = 81,411.30 : x
  2. Step 2: Convert to fraction form
    94,241.70/141,362.55 = 81,411.30/x
  3. Step 3: Cross multiply
    94,241.70x = 141,362.55 × 81,411.30
  4. Step 4: Simplify right side
    94,241.70x = 11,508,508,966.82
  5. Step 5: Solve for x
    x = 11,508,508,966.82/94,241.70
  6. Step 6: Final answer
    x = 122,116.95

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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.