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Finding the Fourth Proportional to 108,615.21, 149,882.81 and 63,300.57

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Solution

The fourth proportional to 108,615.21, 149,882.81 and 63,300.57 is: 87,351.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,615.21 : 149,882.81 = 63,300.57 : x
  2. Step 2: Convert to fraction form
    108,615.21/149,882.81 = 63,300.57/x
  3. Step 3: Cross multiply
    108,615.21x = 149,882.81 × 63,300.57
  4. Step 4: Simplify right side
    108,615.21x = 9,487,667,306.20
  5. Step 5: Solve for x
    x = 9,487,667,306.20/108,615.21
  6. Step 6: Final answer
    x = 87,351.19

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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.