Home / 194,990.96-292,505.64-81,115.40

Finding the Fourth Proportional to 194,990.96, 292,505.64 and 81,115.40

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Solution

The fourth proportional to 194,990.96, 292,505.64 and 81,115.40 is: 121,681.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,990.96 : 292,505.64 = 81,115.40 : x
  2. Step 2: Convert to fraction form
    194,990.96/292,505.64 = 81,115.40/x
  3. Step 3: Cross multiply
    194,990.96x = 292,505.64 × 81,115.40
  4. Step 4: Simplify right side
    194,990.96x = 23,726,711,990.86
  5. Step 5: Solve for x
    x = 23,726,711,990.86/194,990.96
  6. Step 6: Final answer
    x = 121,681.09

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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.