Home / 131,325.20-196,987.80-121,187.60

Finding the Fourth Proportional to 131,325.20, 196,987.80 and 121,187.60

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Solution

The fourth proportional to 131,325.20, 196,987.80 and 121,187.60 is: 181,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,325.20 : 196,987.80 = 121,187.60 : x
  2. Step 2: Convert to fraction form
    131,325.20/196,987.80 = 121,187.60/x
  3. Step 3: Cross multiply
    131,325.20x = 196,987.80 × 121,187.60
  4. Step 4: Simplify right side
    131,325.20x = 23,872,478,711.28
  5. Step 5: Solve for x
    x = 23,872,478,711.28/131,325.20
  6. Step 6: Final answer
    x = 181,781.40

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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.