Home / 127,927.20-191,890.80-68,790.72

Finding the Fourth Proportional to 127,927.20, 191,890.80 and 68,790.72

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Solution

The fourth proportional to 127,927.20, 191,890.80 and 68,790.72 is: 103,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,927.20 : 191,890.80 = 68,790.72 : x
  2. Step 2: Convert to fraction form
    127,927.20/191,890.80 = 68,790.72/x
  3. Step 3: Cross multiply
    127,927.20x = 191,890.80 × 68,790.72
  4. Step 4: Simplify right side
    127,927.20x = 13,200,306,293.38
  5. Step 5: Solve for x
    x = 13,200,306,293.38/127,927.20
  6. Step 6: Final answer
    x = 103,186.08

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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.