Home / 127,787.80-191,739.30-61,202.20

Finding the Fourth Proportional to 127,787.80, 191,739.30 and 61,202.20

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Solution

The fourth proportional to 127,787.80, 191,739.30 and 61,202.20 is: 91,830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,787.80 : 191,739.30 = 61,202.20 : x
  2. Step 2: Convert to fraction form
    127,787.80/191,739.30 = 61,202.20/x
  3. Step 3: Cross multiply
    127,787.80x = 191,739.30 × 61,202.20
  4. Step 4: Simplify right side
    127,787.80x = 11,734,866,986.46
  5. Step 5: Solve for x
    x = 11,734,866,986.46/127,787.80
  6. Step 6: Final answer
    x = 91,830.89

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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.