Home / 136,172.22-187,840.98-81,710.30

Finding the Fourth Proportional to 136,172.22, 187,840.98 and 81,710.30

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Solution

The fourth proportional to 136,172.22, 187,840.98 and 81,710.30 is: 112,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,172.22 : 187,840.98 = 81,710.30 : x
  2. Step 2: Convert to fraction form
    136,172.22/187,840.98 = 81,710.30/x
  3. Step 3: Cross multiply
    136,172.22x = 187,840.98 × 81,710.30
  4. Step 4: Simplify right side
    136,172.22x = 15,348,542,828.09
  5. Step 5: Solve for x
    x = 15,348,542,828.09/136,172.22
  6. Step 6: Final answer
    x = 112,714.20

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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.