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Finding the Fourth Proportional to 187,294.72, 280,899.94 and 54,145.32

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Solution

The fourth proportional to 187,294.72, 280,899.94 and 54,145.32 is: 81,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,294.72 : 280,899.94 = 54,145.32 : x
  2. Step 2: Convert to fraction form
    187,294.72/280,899.94 = 54,145.32/x
  3. Step 3: Cross multiply
    187,294.72x = 280,899.94 × 54,145.32
  4. Step 4: Simplify right side
    187,294.72x = 15,209,417,139.28
  5. Step 5: Solve for x
    x = 15,209,417,139.28/187,294.72
  6. Step 6: Final answer
    x = 81,205.80

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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.