Home / 120,820.58-166,665.20-112,267.70

Finding the Fourth Proportional to 120,820.58, 166,665.20 and 112,267.70

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Solution

The fourth proportional to 120,820.58, 166,665.20 and 112,267.70 is: 154,866.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,820.58 : 166,665.20 = 112,267.70 : x
  2. Step 2: Convert to fraction form
    120,820.58/166,665.20 = 112,267.70/x
  3. Step 3: Cross multiply
    120,820.58x = 166,665.20 × 112,267.70
  4. Step 4: Simplify right side
    120,820.58x = 18,711,117,279.38
  5. Step 5: Solve for x
    x = 18,711,117,279.38/120,820.58
  6. Step 6: Final answer
    x = 154,866.98

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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.