Home / 98,721.84-136,232.64-55,714.90

Finding the Fourth Proportional to 98,721.84, 136,232.64 and 55,714.90

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Solution

The fourth proportional to 98,721.84, 136,232.64 and 55,714.90 is: 76,884.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,721.84 : 136,232.64 = 55,714.90 : x
  2. Step 2: Convert to fraction form
    98,721.84/136,232.64 = 55,714.90/x
  3. Step 3: Cross multiply
    98,721.84x = 136,232.64 × 55,714.90
  4. Step 4: Simplify right side
    98,721.84x = 7,590,187,914.34
  5. Step 5: Solve for x
    x = 7,590,187,914.34/98,721.84
  6. Step 6: Final answer
    x = 76,884.59

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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.