Home / 198,135.64-297,134.34-87,267.16

Finding the Fourth Proportional to 198,135.64, 297,134.34 and 87,267.16

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Solution

The fourth proportional to 198,135.64, 297,134.34 and 87,267.16 is: 130,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,135.64 : 297,134.34 = 87,267.16 : x
  2. Step 2: Convert to fraction form
    198,135.64/297,134.34 = 87,267.16/x
  3. Step 3: Cross multiply
    198,135.64x = 297,134.34 × 87,267.16
  4. Step 4: Simplify right side
    198,135.64x = 25,930,069,990.27
  5. Step 5: Solve for x
    x = 25,930,069,990.27/198,135.64
  6. Step 6: Final answer
    x = 130,870.30

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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.