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Finding the Fourth Proportional to 187,690.69, 281,579.78 and 61,336.77

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Solution

The fourth proportional to 187,690.69, 281,579.78 and 61,336.77 is: 92,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,690.69 : 281,579.78 = 61,336.77 : x
  2. Step 2: Convert to fraction form
    187,690.69/281,579.78 = 61,336.77/x
  3. Step 3: Cross multiply
    187,690.69x = 281,579.78 × 61,336.77
  4. Step 4: Simplify right side
    187,690.69x = 17,271,194,202.51
  5. Step 5: Solve for x
    x = 17,271,194,202.51/187,690.69
  6. Step 6: Final answer
    x = 92,019.45

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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.