Home / 192,490.40-288,298.20-121,631.60

Finding the Fourth Proportional to 192,490.40, 288,298.20 and 121,631.60

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Solution

The fourth proportional to 192,490.40, 288,298.20 and 121,631.60 is: 182,171.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,490.40 : 288,298.20 = 121,631.60 : x
  2. Step 2: Convert to fraction form
    192,490.40/288,298.20 = 121,631.60/x
  3. Step 3: Cross multiply
    192,490.40x = 288,298.20 × 121,631.60
  4. Step 4: Simplify right side
    192,490.40x = 35,066,171,343.12
  5. Step 5: Solve for x
    x = 35,066,171,343.12/192,490.40
  6. Step 6: Final answer
    x = 182,171.01

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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.