Home / 131,042.40-196,563.60-128,855.40

Finding the Fourth Proportional to 131,042.40, 196,563.60 and 128,855.40

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Solution

The fourth proportional to 131,042.40, 196,563.60 and 128,855.40 is: 193,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,042.40 : 196,563.60 = 128,855.40 : x
  2. Step 2: Convert to fraction form
    131,042.40/196,563.60 = 128,855.40/x
  3. Step 3: Cross multiply
    131,042.40x = 196,563.60 × 128,855.40
  4. Step 4: Simplify right side
    131,042.40x = 25,328,281,303.44
  5. Step 5: Solve for x
    x = 25,328,281,303.44/131,042.40
  6. Step 6: Final answer
    x = 193,283.10

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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.