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Finding the Fourth Proportional to 133,363.48, 183,954.90 and 85,541.08

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Solution

The fourth proportional to 133,363.48, 183,954.90 and 85,541.08 is: 117,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,363.48 : 183,954.90 = 85,541.08 : x
  2. Step 2: Convert to fraction form
    133,363.48/183,954.90 = 85,541.08/x
  3. Step 3: Cross multiply
    133,363.48x = 183,954.90 × 85,541.08
  4. Step 4: Simplify right side
    133,363.48x = 15,735,700,817.29
  5. Step 5: Solve for x
    x = 15,735,700,817.29/133,363.48
  6. Step 6: Final answer
    x = 117,991.08

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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.