Home / 127,988.20-191,989.79-39,242.57

Finding the Fourth Proportional to 127,988.20, 191,989.79 and 39,242.57

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Solution

The fourth proportional to 127,988.20, 191,989.79 and 39,242.57 is: 58,866.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,988.20 : 191,989.79 = 39,242.57 : x
  2. Step 2: Convert to fraction form
    127,988.20/191,989.79 = 39,242.57/x
  3. Step 3: Cross multiply
    127,988.20x = 191,989.79 × 39,242.57
  4. Step 4: Simplify right side
    127,988.20x = 7,534,172,577.15
  5. Step 5: Solve for x
    x = 7,534,172,577.15/127,988.20
  6. Step 6: Final answer
    x = 58,866.15

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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.