Home / 151,918.52-209,629.50-91,488.20

Finding the Fourth Proportional to 151,918.52, 209,629.50 and 91,488.20

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Solution

The fourth proportional to 151,918.52, 209,629.50 and 91,488.20 is: 126,242.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,918.52 : 209,629.50 = 91,488.20 : x
  2. Step 2: Convert to fraction form
    151,918.52/209,629.50 = 91,488.20/x
  3. Step 3: Cross multiply
    151,918.52x = 209,629.50 × 91,488.20
  4. Step 4: Simplify right side
    151,918.52x = 19,178,625,621.90
  5. Step 5: Solve for x
    x = 19,178,625,621.90/151,918.52
  6. Step 6: Final answer
    x = 126,242.84

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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.