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Finding the Fourth Proportional to 108,708.96, 150,019.89 and 65,682.46

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Solution

The fourth proportional to 108,708.96, 150,019.89 and 65,682.46 is: 90,642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,708.96 : 150,019.89 = 65,682.46 : x
  2. Step 2: Convert to fraction form
    108,708.96/150,019.89 = 65,682.46/x
  3. Step 3: Cross multiply
    108,708.96x = 150,019.89 × 65,682.46
  4. Step 4: Simplify right side
    108,708.96x = 9,853,675,424.13
  5. Step 5: Solve for x
    x = 9,853,675,424.13/108,708.96
  6. Step 6: Final answer
    x = 90,642.72

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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.