Home / 115,080.36-158,789.70-64,768.68

Finding the Fourth Proportional to 115,080.36, 158,789.70 and 64,768.68

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Solution

The fourth proportional to 115,080.36, 158,789.70 and 64,768.68 is: 89,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,080.36 : 158,789.70 = 64,768.68 : x
  2. Step 2: Convert to fraction form
    115,080.36/158,789.70 = 64,768.68/x
  3. Step 3: Cross multiply
    115,080.36x = 158,789.70 × 64,768.68
  4. Step 4: Simplify right side
    115,080.36x = 10,284,599,266.60
  5. Step 5: Solve for x
    x = 10,284,599,266.60/115,080.36
  6. Step 6: Final answer
    x = 89,368.85

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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.