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Finding the Fourth Proportional to 187,138.80, 280,744.65 and 54,023.40

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Solution

The fourth proportional to 187,138.80, 280,744.65 and 54,023.40 is: 81,045.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,138.80 : 280,744.65 = 54,023.40 : x
  2. Step 2: Convert to fraction form
    187,138.80/280,744.65 = 54,023.40/x
  3. Step 3: Cross multiply
    187,138.80x = 280,744.65 × 54,023.40
  4. Step 4: Simplify right side
    187,138.80x = 15,166,780,524.81
  5. Step 5: Solve for x
    x = 15,166,780,524.81/187,138.80
  6. Step 6: Final answer
    x = 81,045.62

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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.