Home / 127,488.90-191,033.55-80,642.82

Finding the Fourth Proportional to 127,488.90, 191,033.55 and 80,642.82

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Solution

The fourth proportional to 127,488.90, 191,033.55 and 80,642.82 is: 120,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,488.90 : 191,033.55 = 80,642.82 : x
  2. Step 2: Convert to fraction form
    127,488.90/191,033.55 = 80,642.82/x
  3. Step 3: Cross multiply
    127,488.90x = 191,033.55 × 80,642.82
  4. Step 4: Simplify right side
    127,488.90x = 15,405,484,186.61
  5. Step 5: Solve for x
    x = 15,405,484,186.61/127,488.90
  6. Step 6: Final answer
    x = 120,837.85

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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.