Home / 187,003.40-280,418.70-81,768.20

Finding the Fourth Proportional to 187,003.40, 280,418.70 and 81,768.20

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Solution

The fourth proportional to 187,003.40, 280,418.70 and 81,768.20 is: 122,614.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,003.40 : 280,418.70 = 81,768.20 : x
  2. Step 2: Convert to fraction form
    187,003.40/280,418.70 = 81,768.20/x
  3. Step 3: Cross multiply
    187,003.40x = 280,418.70 × 81,768.20
  4. Step 4: Simplify right side
    187,003.40x = 22,929,332,345.34
  5. Step 5: Solve for x
    x = 22,929,332,345.34/187,003.40
  6. Step 6: Final answer
    x = 122,614.52

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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.