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Finding the Fourth Proportional to 187,166.30, 280,749.45 and 74,900.30

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Solution

The fourth proportional to 187,166.30, 280,749.45 and 74,900.30 is: 112,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,166.30 : 280,749.45 = 74,900.30 : x
  2. Step 2: Convert to fraction form
    187,166.30/280,749.45 = 74,900.30/x
  3. Step 3: Cross multiply
    187,166.30x = 280,749.45 × 74,900.30
  4. Step 4: Simplify right side
    187,166.30x = 21,028,218,029.84
  5. Step 5: Solve for x
    x = 21,028,218,029.84/187,166.30
  6. Step 6: Final answer
    x = 112,350.45

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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.