Home / 115,138.72-172,458.06-55,849.76

Finding the Fourth Proportional to 115,138.72, 172,458.06 and 55,849.76

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Solution

The fourth proportional to 115,138.72, 172,458.06 and 55,849.76 is: 83,653.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,138.72 : 172,458.06 = 55,849.76 : x
  2. Step 2: Convert to fraction form
    115,138.72/172,458.06 = 55,849.76/x
  3. Step 3: Cross multiply
    115,138.72x = 172,458.06 × 55,849.76
  4. Step 4: Simplify right side
    115,138.72x = 9,631,741,261.07
  5. Step 5: Solve for x
    x = 9,631,741,261.07/115,138.72
  6. Step 6: Final answer
    x = 83,653.36

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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.