Home / 115,027.12-172,548.78-30,787.12

Finding the Fourth Proportional to 115,027.12, 172,548.78 and 30,787.12

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Solution

The fourth proportional to 115,027.12, 172,548.78 and 30,787.12 is: 46,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,027.12 : 172,548.78 = 30,787.12 : x
  2. Step 2: Convert to fraction form
    115,027.12/172,548.78 = 30,787.12/x
  3. Step 3: Cross multiply
    115,027.12x = 172,548.78 × 30,787.12
  4. Step 4: Simplify right side
    115,027.12x = 5,312,279,995.71
  5. Step 5: Solve for x
    x = 5,312,279,995.71/115,027.12
  6. Step 6: Final answer
    x = 46,182.85

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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.