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Finding the Fourth Proportional to 124,992.80, 172,487.76 and 68,403.04

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Solution

The fourth proportional to 124,992.80, 172,487.76 and 68,403.04 is: 94,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,992.80 : 172,487.76 = 68,403.04 : x
  2. Step 2: Convert to fraction form
    124,992.80/172,487.76 = 68,403.04/x
  3. Step 3: Cross multiply
    124,992.80x = 172,487.76 × 68,403.04
  4. Step 4: Simplify right side
    124,992.80x = 11,798,687,146.79
  5. Step 5: Solve for x
    x = 11,798,687,146.79/124,992.80
  6. Step 6: Final answer
    x = 94,394.93

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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.