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Finding the Fourth Proportional to 108,706.11, 150,015.99 and 65,679.63

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Solution

The fourth proportional to 108,706.11, 150,015.99 and 65,679.63 is: 90,638.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,706.11 : 150,015.99 = 65,679.63 : x
  2. Step 2: Convert to fraction form
    108,706.11/150,015.99 = 65,679.63/x
  3. Step 3: Cross multiply
    108,706.11x = 150,015.99 × 65,679.63
  4. Step 4: Simplify right side
    108,706.11x = 9,852,994,717.28
  5. Step 5: Solve for x
    x = 9,852,994,717.28/108,706.11
  6. Step 6: Final answer
    x = 90,638.83

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1.5x scale

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.