Home / 111,333.20-166,999.80-102,779.60

Finding the Fourth Proportional to 111,333.20, 166,999.80 and 102,779.60

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Solution

The fourth proportional to 111,333.20, 166,999.80 and 102,779.60 is: 154,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,333.20 : 166,999.80 = 102,779.60 : x
  2. Step 2: Convert to fraction form
    111,333.20/166,999.80 = 102,779.60/x
  3. Step 3: Cross multiply
    111,333.20x = 166,999.80 × 102,779.60
  4. Step 4: Simplify right side
    111,333.20x = 17,164,172,644.08
  5. Step 5: Solve for x
    x = 17,164,172,644.08/111,333.20
  6. Step 6: Final answer
    x = 154,169.40

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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.