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Finding the Fourth Proportional to 187,216.60, 280,826.10 and 74,906.20

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Solution

The fourth proportional to 187,216.60, 280,826.10 and 74,906.20 is: 112,359.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,216.60 : 280,826.10 = 74,906.20 : x
  2. Step 2: Convert to fraction form
    187,216.60/280,826.10 = 74,906.20/x
  3. Step 3: Cross multiply
    187,216.60x = 280,826.10 × 74,906.20
  4. Step 4: Simplify right side
    187,216.60x = 21,035,616,011.82
  5. Step 5: Solve for x
    x = 21,035,616,011.82/187,216.60
  6. Step 6: Final answer
    x = 112,359.78

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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.