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Finding the Fourth Proportional to 187,398.36, 280,965.24 and 69,054.12

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Solution

The fourth proportional to 187,398.36, 280,965.24 and 69,054.12 is: 103,532.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,398.36 : 280,965.24 = 69,054.12 : x
  2. Step 2: Convert to fraction form
    187,398.36/280,965.24 = 69,054.12/x
  3. Step 3: Cross multiply
    187,398.36x = 280,965.24 × 69,054.12
  4. Step 4: Simplify right side
    187,398.36x = 19,401,807,398.79
  5. Step 5: Solve for x
    x = 19,401,807,398.79/187,398.36
  6. Step 6: Final answer
    x = 103,532.43

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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.