Home / 131,128.80-196,693.20-129,962.40

Finding the Fourth Proportional to 131,128.80, 196,693.20 and 129,962.40

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Solution

The fourth proportional to 131,128.80, 196,693.20 and 129,962.40 is: 194,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,128.80 : 196,693.20 = 129,962.40 : x
  2. Step 2: Convert to fraction form
    131,128.80/196,693.20 = 129,962.40/x
  3. Step 3: Cross multiply
    131,128.80x = 196,693.20 × 129,962.40
  4. Step 4: Simplify right side
    131,128.80x = 25,562,720,335.68
  5. Step 5: Solve for x
    x = 25,562,720,335.68/131,128.80
  6. Step 6: Final answer
    x = 194,943.60

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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.