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Finding the Fourth Proportional to 131,752.80, 197,168.40 and 120,693.60

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Solution

The fourth proportional to 131,752.80, 197,168.40 and 120,693.60 is: 180,618.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,752.80 : 197,168.40 = 120,693.60 : x
  2. Step 2: Convert to fraction form
    131,752.80/197,168.40 = 120,693.60/x
  3. Step 3: Cross multiply
    131,752.80x = 197,168.40 × 120,693.60
  4. Step 4: Simplify right side
    131,752.80x = 23,796,964,002.24
  5. Step 5: Solve for x
    x = 23,796,964,002.24/131,752.80
  6. Step 6: Final answer
    x = 180,618.28

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1.5x scale

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.