Home / 111,720.96-154,176.48-61,421.04

Finding the Fourth Proportional to 111,720.96, 154,176.48 and 61,421.04

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Solution

The fourth proportional to 111,720.96, 154,176.48 and 61,421.04 is: 84,761.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,720.96 : 154,176.48 = 61,421.04 : x
  2. Step 2: Convert to fraction form
    111,720.96/154,176.48 = 61,421.04/x
  3. Step 3: Cross multiply
    111,720.96x = 154,176.48 × 61,421.04
  4. Step 4: Simplify right side
    111,720.96x = 9,469,679,745.14
  5. Step 5: Solve for x
    x = 9,469,679,745.14/111,720.96
  6. Step 6: Final answer
    x = 84,761.89

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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.