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Finding the Fourth Proportional to 124,890, 172,344.69 and 68,300.16

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Solution

The fourth proportional to 124,890, 172,344.69 and 68,300.16 is: 94,252.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,890 : 172,344.69 = 68,300.16 : x
  2. Step 2: Convert to fraction form
    124,890/172,344.69 = 68,300.16/x
  3. Step 3: Cross multiply
    124,890x = 172,344.69 × 68,300.16
  4. Step 4: Simplify right side
    124,890x = 11,771,169,902.15
  5. Step 5: Solve for x
    x = 11,771,169,902.15/124,890
  6. Step 6: Final answer
    x = 94,252.30

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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.