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Finding the Fourth Proportional to 177,318.60, 265,977.90 and 121,331.40

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Solution

The fourth proportional to 177,318.60, 265,977.90 and 121,331.40 is: 181,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,318.60 : 265,977.90 = 121,331.40 : x
  2. Step 2: Convert to fraction form
    177,318.60/265,977.90 = 121,331.40/x
  3. Step 3: Cross multiply
    177,318.60x = 265,977.90 × 121,331.40
  4. Step 4: Simplify right side
    177,318.60x = 32,271,470,976.06
  5. Step 5: Solve for x
    x = 32,271,470,976.06/177,318.60
  6. Step 6: Final answer
    x = 181,997.10

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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.