Home / 119,810.40-165,285.60-72,036

Finding the Fourth Proportional to 119,810.40, 165,285.60 and 72,036

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Solution

The fourth proportional to 119,810.40, 165,285.60 and 72,036 is: 99,377.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,810.40 : 165,285.60 = 72,036 : x
  2. Step 2: Convert to fraction form
    119,810.40/165,285.60 = 72,036/x
  3. Step 3: Cross multiply
    119,810.40x = 165,285.60 × 72,036
  4. Step 4: Simplify right side
    119,810.40x = 11,906,513,481.60
  5. Step 5: Solve for x
    x = 11,906,513,481.60/119,810.40
  6. Step 6: Final answer
    x = 99,377.96

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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.