Home / 119,789.52-165,276.36-77,349.84

Finding the Fourth Proportional to 119,789.52, 165,276.36 and 77,349.84

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Solution

The fourth proportional to 119,789.52, 165,276.36 and 77,349.84 is: 106,721.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,789.52 : 165,276.36 = 77,349.84 : x
  2. Step 2: Convert to fraction form
    119,789.52/165,276.36 = 77,349.84/x
  3. Step 3: Cross multiply
    119,789.52x = 165,276.36 × 77,349.84
  4. Step 4: Simplify right side
    119,789.52x = 12,784,100,001.78
  5. Step 5: Solve for x
    x = 12,784,100,001.78/119,789.52
  6. Step 6: Final answer
    x = 106,721.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.