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Finding the Fourth Proportional to 127,080, 190,917.86 and 119,898.77

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Solution

The fourth proportional to 127,080, 190,917.86 and 119,898.77 is: 180,129.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,080 : 190,917.86 = 119,898.77 : x
  2. Step 2: Convert to fraction form
    127,080/190,917.86 = 119,898.77/x
  3. Step 3: Cross multiply
    127,080x = 190,917.86 × 119,898.77
  4. Step 4: Simplify right side
    127,080x = 22,890,815,030.95
  5. Step 5: Solve for x
    x = 22,890,815,030.95/127,080
  6. Step 6: Final answer
    x = 180,129.17

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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.