Home / 127,985.80-191,748.30-109,553.80

Finding the Fourth Proportional to 127,985.80, 191,748.30 and 109,553.80

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Solution

The fourth proportional to 127,985.80, 191,748.30 and 109,553.80 is: 164,133.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,985.80 : 191,748.30 = 109,553.80 : x
  2. Step 2: Convert to fraction form
    127,985.80/191,748.30 = 109,553.80/x
  3. Step 3: Cross multiply
    127,985.80x = 191,748.30 × 109,553.80
  4. Step 4: Simplify right side
    127,985.80x = 21,006,754,908.54
  5. Step 5: Solve for x
    x = 21,006,754,908.54/127,985.80
  6. Step 6: Final answer
    x = 164,133.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.