Home / 131,881.20-197,821.80-127,215.60

Finding the Fourth Proportional to 131,881.20, 197,821.80 and 127,215.60

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Solution

The fourth proportional to 131,881.20, 197,821.80 and 127,215.60 is: 190,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,881.20 : 197,821.80 = 127,215.60 : x
  2. Step 2: Convert to fraction form
    131,881.20/197,821.80 = 127,215.60/x
  3. Step 3: Cross multiply
    131,881.20x = 197,821.80 × 127,215.60
  4. Step 4: Simplify right side
    131,881.20x = 25,166,018,980.08
  5. Step 5: Solve for x
    x = 25,166,018,980.08/131,881.20
  6. Step 6: Final answer
    x = 190,823.40

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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.