Home / 111,036.20-166,554.30-77,793.80

Finding the Fourth Proportional to 111,036.20, 166,554.30 and 77,793.80

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Solution

The fourth proportional to 111,036.20, 166,554.30 and 77,793.80 is: 116,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,036.20 : 166,554.30 = 77,793.80 : x
  2. Step 2: Convert to fraction form
    111,036.20/166,554.30 = 77,793.80/x
  3. Step 3: Cross multiply
    111,036.20x = 166,554.30 × 77,793.80
  4. Step 4: Simplify right side
    111,036.20x = 12,956,891,903.34
  5. Step 5: Solve for x
    x = 12,956,891,903.34/111,036.20
  6. Step 6: Final answer
    x = 116,690.70

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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.