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Finding the Fourth Proportional to 108,580.61, 149,849.54 and 68,328.88

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Solution

The fourth proportional to 108,580.61, 149,849.54 and 68,328.88 is: 94,299.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,580.61 : 149,849.54 = 68,328.88 : x
  2. Step 2: Convert to fraction form
    108,580.61/149,849.54 = 68,328.88/x
  3. Step 3: Cross multiply
    108,580.61x = 149,849.54 × 68,328.88
  4. Step 4: Simplify right side
    108,580.61x = 10,239,050,658.29
  5. Step 5: Solve for x
    x = 10,239,050,658.29/108,580.61
  6. Step 6: Final answer
    x = 94,299.07

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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.