Home / 199,387.47-275,145-118,813.20

Finding the Fourth Proportional to 199,387.47, 275,145 and 118,813.20

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Solution

The fourth proportional to 199,387.47, 275,145 and 118,813.20 is: 163,956.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,387.47 : 275,145 = 118,813.20 : x
  2. Step 2: Convert to fraction form
    199,387.47/275,145 = 118,813.20/x
  3. Step 3: Cross multiply
    199,387.47x = 275,145 × 118,813.20
  4. Step 4: Simplify right side
    199,387.47x = 32,690,857,914
  5. Step 5: Solve for x
    x = 32,690,857,914/199,387.47
  6. Step 6: Final answer
    x = 163,956.43

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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.