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Finding the Fourth Proportional to 187,246.80, 280,870.20 and 74,944.35

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Solution

The fourth proportional to 187,246.80, 280,870.20 and 74,944.35 is: 112,416.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,246.80 : 280,870.20 = 74,944.35 : x
  2. Step 2: Convert to fraction form
    187,246.80/280,870.20 = 74,944.35/x
  3. Step 3: Cross multiply
    187,246.80x = 280,870.20 × 74,944.35
  4. Step 4: Simplify right side
    187,246.80x = 21,049,634,573.37
  5. Step 5: Solve for x
    x = 21,049,634,573.37/187,246.80
  6. Step 6: Final answer
    x = 112,416.53

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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.