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Finding the Fourth Proportional to 187,247.20, 280,870.80 and 127,112.80

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Solution

The fourth proportional to 187,247.20, 280,870.80 and 127,112.80 is: 190,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,247.20 : 280,870.80 = 127,112.80 : x
  2. Step 2: Convert to fraction form
    187,247.20/280,870.80 = 127,112.80/x
  3. Step 3: Cross multiply
    187,247.20x = 280,870.80 × 127,112.80
  4. Step 4: Simplify right side
    187,247.20x = 35,702,273,826.24
  5. Step 5: Solve for x
    x = 35,702,273,826.24/187,247.20
  6. Step 6: Final answer
    x = 190,669.20

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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.