Home / 151,928.23-209,483.09-103,558.79

Finding the Fourth Proportional to 151,928.23, 209,483.09 and 103,558.79

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Solution

The fourth proportional to 151,928.23, 209,483.09 and 103,558.79 is: 142,789.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,928.23 : 209,483.09 = 103,558.79 : x
  2. Step 2: Convert to fraction form
    151,928.23/209,483.09 = 103,558.79/x
  3. Step 3: Cross multiply
    151,928.23x = 209,483.09 × 103,558.79
  4. Step 4: Simplify right side
    151,928.23x = 21,693,815,325.86
  5. Step 5: Solve for x
    x = 21,693,815,325.86/151,928.23
  6. Step 6: Final answer
    x = 142,789.89

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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.