Home / 111,189.96-166,500.75-61,215.12

Finding the Fourth Proportional to 111,189.96, 166,500.75 and 61,215.12

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Solution

The fourth proportional to 111,189.96, 166,500.75 and 61,215.12 is: 91,666.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,189.96 : 166,500.75 = 61,215.12 : x
  2. Step 2: Convert to fraction form
    111,189.96/166,500.75 = 61,215.12/x
  3. Step 3: Cross multiply
    111,189.96x = 166,500.75 × 61,215.12
  4. Step 4: Simplify right side
    111,189.96x = 10,192,363,391.34
  5. Step 5: Solve for x
    x = 10,192,363,391.34/111,189.96
  6. Step 6: Final answer
    x = 91,666.22

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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.