Home / 115,139.00-158,945.19-81,175.16

Finding the Fourth Proportional to 115,139.00, 158,945.19 and 81,175.16

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Solution

The fourth proportional to 115,139.00, 158,945.19 and 81,175.16 is: 112,059.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,139.00 : 158,945.19 = 81,175.16 : x
  2. Step 2: Convert to fraction form
    115,139.00/158,945.19 = 81,175.16/x
  3. Step 3: Cross multiply
    115,139.00x = 158,945.19 × 81,175.16
  4. Step 4: Simplify right side
    115,139.00x = 12,902,401,322.44
  5. Step 5: Solve for x
    x = 12,902,401,322.44/115,139.00
  6. Step 6: Final answer
    x = 112,059.35

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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.