Home / 115,247.12-172,870.86-75,979.64

Finding the Fourth Proportional to 115,247.12, 172,870.86 and 75,979.64

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Solution

The fourth proportional to 115,247.12, 172,870.86 and 75,979.64 is: 113,969.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,247.12 : 172,870.86 = 75,979.64 : x
  2. Step 2: Convert to fraction form
    115,247.12/172,870.86 = 75,979.64/x
  3. Step 3: Cross multiply
    115,247.12x = 172,870.86 × 75,979.64
  4. Step 4: Simplify right side
    115,247.12x = 13,134,665,709.29
  5. Step 5: Solve for x
    x = 13,134,665,709.29/115,247.12
  6. Step 6: Final answer
    x = 113,969.58

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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.