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Finding the Fourth Proportional to 112,705, 155,537.78 and 62,404

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Solution

The fourth proportional to 112,705, 155,537.78 and 62,404 is: 86,120.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,705 : 155,537.78 = 62,404 : x
  2. Step 2: Convert to fraction form
    112,705/155,537.78 = 62,404/x
  3. Step 3: Cross multiply
    112,705x = 155,537.78 × 62,404
  4. Step 4: Simplify right side
    112,705x = 9,706,179,623.12
  5. Step 5: Solve for x
    x = 9,706,179,623.12/112,705
  6. Step 6: Final answer
    x = 86,120.22

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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.