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Finding the Fourth Proportional to 108,615.30, 149,882.94 and 63,300.66

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Solution

The fourth proportional to 108,615.30, 149,882.94 and 63,300.66 is: 87,351.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,615.30 : 149,882.94 = 63,300.66 : x
  2. Step 2: Convert to fraction form
    108,615.30/149,882.94 = 63,300.66/x
  3. Step 3: Cross multiply
    108,615.30x = 149,882.94 × 63,300.66
  4. Step 4: Simplify right side
    108,615.30x = 9,487,689,024.74
  5. Step 5: Solve for x
    x = 9,487,689,024.74/108,615.30
  6. Step 6: Final answer
    x = 87,351.31

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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.