Home / 115,016.36-158,784.87-80,666.58

Finding the Fourth Proportional to 115,016.36, 158,784.87 and 80,666.58

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Solution

The fourth proportional to 115,016.36, 158,784.87 and 80,666.58 is: 111,363.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,016.36 : 158,784.87 = 80,666.58 : x
  2. Step 2: Convert to fraction form
    115,016.36/158,784.87 = 80,666.58/x
  3. Step 3: Cross multiply
    115,016.36x = 158,784.87 × 80,666.58
  4. Step 4: Simplify right side
    115,016.36x = 12,808,633,316.59
  5. Step 5: Solve for x
    x = 12,808,633,316.59/115,016.36
  6. Step 6: Final answer
    x = 111,363.58

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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.