Home / 131,201.60-196,802.40-120,315.20

Finding the Fourth Proportional to 131,201.60, 196,802.40 and 120,315.20

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Solution

The fourth proportional to 131,201.60, 196,802.40 and 120,315.20 is: 180,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,201.60 : 196,802.40 = 120,315.20 : x
  2. Step 2: Convert to fraction form
    131,201.60/196,802.40 = 120,315.20/x
  3. Step 3: Cross multiply
    131,201.60x = 196,802.40 × 120,315.20
  4. Step 4: Simplify right side
    131,201.60x = 23,678,320,116.48
  5. Step 5: Solve for x
    x = 23,678,320,116.48/131,201.60
  6. Step 6: Final answer
    x = 180,472.80

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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.