Home / 120,830.40-166,753.92-73,085.76

Finding the Fourth Proportional to 120,830.40, 166,753.92 and 73,085.76

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Solution

The fourth proportional to 120,830.40, 166,753.92 and 73,085.76 is: 100,863.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,830.40 : 166,753.92 = 73,085.76 : x
  2. Step 2: Convert to fraction form
    120,830.40/166,753.92 = 73,085.76/x
  3. Step 3: Cross multiply
    120,830.40x = 166,753.92 × 73,085.76
  4. Step 4: Simplify right side
    120,830.40x = 12,187,336,976.18
  5. Step 5: Solve for x
    x = 12,187,336,976.18/120,830.40
  6. Step 6: Final answer
    x = 100,863.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.