Home / 198,507.81-297,594.27-86,103.36

Finding the Fourth Proportional to 198,507.81, 297,594.27 and 86,103.36

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Solution

The fourth proportional to 198,507.81, 297,594.27 and 86,103.36 is: 129,082.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,507.81 : 297,594.27 = 86,103.36 : x
  2. Step 2: Convert to fraction form
    198,507.81/297,594.27 = 86,103.36/x
  3. Step 3: Cross multiply
    198,507.81x = 297,594.27 × 86,103.36
  4. Step 4: Simplify right side
    198,507.81x = 25,623,866,563.75
  5. Step 5: Solve for x
    x = 25,623,866,563.75/198,507.81
  6. Step 6: Final answer
    x = 129,082.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.