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Finding the Fourth Proportional to 187,330.92, 280,922.42 and 74,990.21

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Solution

The fourth proportional to 187,330.92, 280,922.42 and 74,990.21 is: 112,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,330.92 : 280,922.42 = 74,990.21 : x
  2. Step 2: Convert to fraction form
    187,330.92/280,922.42 = 74,990.21/x
  3. Step 3: Cross multiply
    187,330.92x = 280,922.42 × 74,990.21
  4. Step 4: Simplify right side
    187,330.92x = 21,066,429,489.95
  5. Step 5: Solve for x
    x = 21,066,429,489.95/187,330.92
  6. Step 6: Final answer
    x = 112,455.70

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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.