Home / 131,253.40-196,977.30-86,865.40

Finding the Fourth Proportional to 131,253.40, 196,977.30 and 86,865.40

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Solution

The fourth proportional to 131,253.40, 196,977.30 and 86,865.40 is: 130,362.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,253.40 : 196,977.30 = 86,865.40 : x
  2. Step 2: Convert to fraction form
    131,253.40/196,977.30 = 86,865.40/x
  3. Step 3: Cross multiply
    131,253.40x = 196,977.30 × 86,865.40
  4. Step 4: Simplify right side
    131,253.40x = 17,110,511,955.42
  5. Step 5: Solve for x
    x = 17,110,511,955.42/131,253.40
  6. Step 6: Final answer
    x = 130,362.43

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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.