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Finding the Fourth Proportional to 124,940.63, 172,422.12 and 68,352

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Solution

The fourth proportional to 124,940.63, 172,422.12 and 68,352 is: 94,327.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,940.63 : 172,422.12 = 68,352 : x
  2. Step 2: Convert to fraction form
    124,940.63/172,422.12 = 68,352/x
  3. Step 3: Cross multiply
    124,940.63x = 172,422.12 × 68,352
  4. Step 4: Simplify right side
    124,940.63x = 11,785,396,746.24
  5. Step 5: Solve for x
    x = 11,785,396,746.24/124,940.63
  6. Step 6: Final answer
    x = 94,327.98

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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.