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Finding the Fourth Proportional to 165,015.40, 247,523.10 and 54,207.40

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Solution

The fourth proportional to 165,015.40, 247,523.10 and 54,207.40 is: 81,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,015.40 : 247,523.10 = 54,207.40 : x
  2. Step 2: Convert to fraction form
    165,015.40/247,523.10 = 54,207.40/x
  3. Step 3: Cross multiply
    165,015.40x = 247,523.10 × 54,207.40
  4. Step 4: Simplify right side
    165,015.40x = 13,417,583,690.94
  5. Step 5: Solve for x
    x = 13,417,583,690.94/165,015.40
  6. Step 6: Final answer
    x = 81,311.10

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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.