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Finding the Fourth Proportional to 109,372.98, 150,948.63 and 61,638.06

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Solution

The fourth proportional to 109,372.98, 150,948.63 and 61,638.06 is: 85,068.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,372.98 : 150,948.63 = 61,638.06 : x
  2. Step 2: Convert to fraction form
    109,372.98/150,948.63 = 61,638.06/x
  3. Step 3: Cross multiply
    109,372.98x = 150,948.63 × 61,638.06
  4. Step 4: Simplify right side
    109,372.98x = 9,304,180,712.86
  5. Step 5: Solve for x
    x = 9,304,180,712.86/109,372.98
  6. Step 6: Final answer
    x = 85,068.37

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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.