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Finding the Fourth Proportional to 108,124.61, 149,211.33 and 60,378

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Solution

The fourth proportional to 108,124.61, 149,211.33 and 60,378 is: 83,321.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,124.61 : 149,211.33 = 60,378 : x
  2. Step 2: Convert to fraction form
    108,124.61/149,211.33 = 60,378/x
  3. Step 3: Cross multiply
    108,124.61x = 149,211.33 × 60,378
  4. Step 4: Simplify right side
    108,124.61x = 9,009,081,682.74
  5. Step 5: Solve for x
    x = 9,009,081,682.74/108,124.61
  6. Step 6: Final answer
    x = 83,321.29

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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.